0.104g of an unknown diprotic acid was weighed into a flask dissolved into 150ml of water the resulting solution was titrated using 46.5ml of 0.103M NaOH. Calculate the molar mass of the unknown diprotic acid.

Answers

Answer 1

The molar mass of the unknown diprotic acid, given that 0.104 g of the acid was dissolved in 150 mL of water is 43.42 g/mol

How do I determine the molar mass?

First, we shall dtermine the mole of NaOH. This can be obtained as follow:

Volume = 46.5 mL = 46.5 / 1000 = 0.0465 LMolarity of NaOH = 0.103 MMole of NaOH =?

Mole = Molarity x Volume

Mole of NaOH = 0.103 × 0.0465

Mole of NaOH = 0.00479 mole

Finally, we shall determine the molar mass of the unknown diprotic acid. Details below:

Balanced equation:

H₂X + 2NaOH —> Na₂X + 2H₂O

Note: H₂X is the diprotic acid

From the balanced equation above,

2 moles of NaOH reacted with 1 mole of H₂X.

Therefore,

0.00479 mole of NaOH will react with = 0.00479 / 2 = 0.002395 mole of H₂X.

Mole of diprotic acid = 0.002395 moleMass of diprotic acid = 0.104 gMolar mass of diprotic acid =?

Molar mass = mass / mole

Molar mass of diprotic acid = 0.104 / 0.002395

Molar mass of diprotic acid = 43.42 g/mol

Thus, the molar mass of the diprotic acid is 43.42 g/mol

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Related Questions

when pyruvate is used to form acetyl coa or ethanol in fermentation, the product has only two carbon atoms. what happened to the third carbon?

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When Pyruvate is used to form acetyl coa or ethanol in fermentation the third carbon atom forms carbon dioxide and gets released.

What is pyruvate?

The simplest alpha-keto acid is pyruvic acid (CH3COCOOH), which has a carboxylic acid and a ketone functional group. The conjugate base pyruvate, CH3COCOO, is a metabolic intermediary found in many different cell-wide metabolic pathways.

Pyruvic acid can be produced from glucose via the process of glycolysis, returned to carbohydrates (such as glucose) via the process of gluconeogenesis, or transformed to fatty acids via acetyl-CoA interaction. Additionally, it can be fermented into ethanol or lactic acid and used to create the amino acid alanine.

When oxygen is present (aerobic respiration), pyruvic acid provides energy to cells through the citric acid cycle, also known as the Krebs cycle, and when oxygen is not present, pyruvic acid ferments to form lactate.

The pyruvate molecule is a three carbon compound. It converts into acetyl CoA in the presence of pyruvate dehydrogenase complex. The acetyl CoA is a two carbon molecule , so the third carbon atom forms carbon dioxide and gets released. So each pyruvate molecule that turns into acetyl CoA forms one molecule of CO2.

So,When Pyruvate is used to form acetyl coa or ethanol in fermentation the third carbon atom forms carbon dioxide and gets released.

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How do you find the density of air at STP?

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At STP, the air has a density of 0.0013 g/ml. Mass is measured by density. Density is calculated as d = mass/volume.

The abbreviation STP stands for standard temperature pressure. The best practice is to describe the standard and write out the precise conditions for each measurement because different industries and applications utilise different STP values. Records can be kept clear by stating the temperature and pressure parameters for each readout, inspection, and process. Although pure water vapour cannot exist at STP, a theoretical estimate for water vapour density at STP can be calculated using these dry air density data. Theoretically, 100% water vapour would have a density of 0.7618 kg/m3 or 62.19% of the density of dry air since pure water vapour has a density of 62.19%.

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Bromobenzene is converted to a compound with the molecular formula c7h7br in the reaction scheme. Identify the reagents in each step and the products formed in each step.

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Bromobenzene is converted to a compound with the molecular formula c7h7br in the following reaction scheme.

Bromobenzene is an organic compound with the chemical formula C6H5Br. It is a colorless liquid with a sweet, pungent odor. It is used in the production of dyes, pharmaceuticals, and other organic compounds.

Bromobenzene + NaNH2 --> 1-Phenyl-2-bromoethanamine + NaBr

Reagents: Bromobenzene, NaNH2

Products: 1-Phenyl-2-bromoethanamine, NaBr

1-Phenyl-2-bromoethanamine + KOH --> 1-Phenyl-2-hydroxyethanamine + HBr

Reagents: 1-Phenyl-2-bromoethanamine, KOH

Products: 1-Phenyl-2-hydroxyethanamine, HBr

1-Phenyl-2-hydroxyethanamine + HBr --> 2-Bromo-1-phenylethanone + NaBr

Reagents: 1-Phenyl-2-hydroxyethanamine, HBr

Products: 2-Bromo-1-phenylethanone, NaBr

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what effect will the addition of a small amount of strong acid have on a buffer solution? what effect will the addition of a small amount of strong acid have on a buffer solution? no effect drastically lowers the ph slightly lowers the ph slightly raises the ph drastically raises the ph

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There will be no effect of adding a small amount of strong acid to a buffer solution.

The conjugate base in the buffer eats the hydronium ion, turning it into water and the weak acid of the conjugate base when a strong acid (H3O+) is added to the buffer solution. This causes the amount of weak acid to increase and the amount of conjugate base to decrease.

A buffer solution is an aqueous mixture of a weak acid and either its conjugate base or base itself. When a modest amount of a strong acid or base is applied to it, the pH hardly changes at all.

A buffer is a substance that can withstand a pH change when acidic or basic substances are added.

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People who have eaten fish containing ciguatoxin can become very ill. Suggest why eating carnivorous fish is more likely to make you ill than eating herbivorous fish.

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Answer:

Fish that are carnivorous, or meat-eating, are more likely to contain harmful substances such as ciguatoxin because they feed on other fish that may have already accumulated the toxin. Herbivorous fish, on the other hand, feed on plant matter and are less likely to have accumulated harmful substances from their diet. This is because toxins tend to accumulate in the fatty tissues of animals, and carnivorous fish have a higher fat content than herbivorous fish. Additionally, carnivorous fish are typically higher up on the food chain, which means that they may have eaten several other fish that have accumulated toxins, further increasing the concentration of toxins in their tissues.

Explanation:

What is the cell potential for Zn and Cu?

Answers

The electrode potential for copper is +0.34 V and for zinc -0.76 V.

Zinc has an electrode potential of -0.76 V, whereas copper has a potential of +0.34 V, With both electrodes acting anodically in relation to their respective local electrolytes, the voltmeter measures the sum of these two voltages, or 1.10 V, in an open circuit. Two electrodes are connected in a closed circuit, which allows current to flow. Copper functions as the galvanic cell's cathode, while zinc acts as its anode, supplying electrons (consuming electrons).

Copper electrode takes up copper atoms from the electrolyte as the zinc electrode dissolves (corrodes or oxidizes) (electroplating or reduction). This procedure keeps going as long as the circuit is closed.

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which of the following processes is a chemical reaction? a. distillation d. condensation b. combustion e. sublima

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The correct answer is combustion. Burning is the result of a chemical change

Brainliest is appreciated!

Water and dissolved minerals are conducted from the roots to the stems and leaves via ___________, whereas sugar is conducted through specialized cells known as _____________

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Water and dissolved minerals are conducted from the roots to the stems and leaves via xylem tissue, whereas sugar is conducted through specialized cells known as seive.

Xylem tissue carries water and inorganic nutrients from the soil to plant roots and stems. It consists of elongated cells with pointed ends called tracheids and shorter and wider cells called vascular elements. The walls of these cells are woody and have wall openings called pits.

Xylem transports and stores water and water-soluble nutrients in vascular plants. The phloem is responsible for the transport of sugars, proteins, and other organic molecules in plants. Vascular plants can grow taller than others due to the rigidity of the xylem cells that support the plant.

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9.4 the molecule shown here is difluoromethane (ch2f2), which is used as a refrigerant called r-32. based on the structure, how many electron domains surround the c atom in this molecule? would the molecule have a nonzero dipole moment?

Answers

The  electron domains surround the C atom in this molecule is 4 electron domain. yes the molecule have a nonzero dipole moment.

The difluoromethane , CH₂F₂ have the 4 electron domains . the electron domains the are lone pairs and bond location around the particular atom present in the molecule. in the CH₂F₂ :

carbon have the valence electron = 4

Fluorine has the valence electron = 7

hydrogen has the valence electron = 1

Th CH₂F₂ has a tetrahedral geometry. the central atom Carbon has zero no. of lone pair and 4 bonded pair so, the electron domain is 4. yes the molecule have a nonzero dipole moment because of the unequal distribution of the charges.

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I'm not too sure on this question: Give a balanced chemical equation for solid aluminum reacting with aqueous hydrogen monofluoride to produce aqueous aluminum fluoride and hydrogen gas.

Help would be much appreciated! :D

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The balanced reaction equation is given as;

[tex]2Al + 6HF(aq) ------- > 2AlF_{3} (aq) + 3H_{2} (g)[/tex]

What is the balanced chemical reaction equation?

We know that a chemical reaction has to do with the interaction between the reactants which would lead to the formation of the products. We know that one of the rules that govern a chemical reaction is that a reaction equation would be said to be balanced if the number of the atoms of each of the elements on the reactants side is the same as the number of the atoms on the products side.

The balanced reaction equation of the reaction between solid aluminum reacting with aqueous hydrogen monofluoride to produce aqueous aluminum fluoride and hydrogen gas has been shown above.

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What chemical species is missing in the net ionic equation
Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s)

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The chemical species that is missing from the net ionic equation is the number of electrons.

What is the missing chemical species?

We know that what we have in this case is a redox reaction. When we talk about a redox reaction we are talking about the kind of reaction where reduction and oxidation are both taking place at the same time. This implies that one of the species would accept the electrons and one of the species would donate the electrons.

Having said this, if we look at the reaction equation as it has been written, we can see that the specie that is missing here is the number of electrons that have been lost or gained in the course of the reaction as it has been written here.

We can only be able to infer this from the charges that the species that we can see in the reaction equation are carrying.

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100 POINTS WILL GIVE BRAINLIEST

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Answer:

the answer is B(conducting)

Explanation:

PLEASE MARK AS BRAINLIEST

Which phenomenon that goes unexplained by lewis structures is solved by applying molecular orbital theory?

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The para magnetism of oxygen molecule is unexplained by Lewis structures and  is solved by applying molecular orbital theory. So, the option C is the correct answer.

Lewis structure cannot explain the Para magnetism of oxygen molecule. Only the molecular orbital theory explains the para magnetism of oxygen molecule because the oxygen molecule contain two unpaired electrons.

Lewis structure explain the bond angle, the electrons in a molecule's valence shell and the ionization energy trends.

Molecular orbital theory explain bonding in molecules.

As a result, Lewis structure can explain option A (bond angle) and B (ionization energy trends), cannot explain option C. Only the molecular orbital theory can explain option C (the para magnetism of oxygen molecule).

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an open-end mercury manometer, like the one shown here, is used to measure the pressure of an enclosed gas. what is the pressure of the enclosed gas if the mercury in the arm attached to the gas container is 354 mm higher than the arm open to the atmosphere and the atmospheric pressure is measured to be 0.975 atm?

Answers

The pressure of gas in a container is measured using a manometer with a tolerance of 0.509 atm. The pressure of an enclosed gas is measured using an open-end mercury manometer, like the one in this image.

However, unless clearly stated otherwise, a U-shaped tube that is partially filled with fluid is what is typically meant when using the term "manometer." To demonstrate how air pressure affects a liquid column in a laboratory experiment, you can quickly construct this kind of manometer. A manometer is a gauge used in science to measure pressure. The fourth and most basic state of matter is gas (the others being solid, liquid, and plasma). A pure gas might contain a single atom (e.g. a noble gas like neon).

The pressure of gas in a container is measured using a manometer is

(354*0.975 )- 344.65 = 0.509 atm.

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A manometer with a tolerance of 0.509 atm is used to measure the pressure of gas in a container.

However, The open-tube manometer is a U-shaped tube that is partially filled with fluid, usually mercury or water. Which is commonly intended when using the term "manometer" unless it is specifically indicated otherwise. This form of manometer can be easily built to demonstrate how air pressure influences a liquid column in a laboratory experiment.  The pressure that is measured is related to the difference in height of the fluid at the two ends of the U-shaped tube.

Finally pressure of gas in a container is measured using a manometer is

(354×0.975 )- 344.65 = 0.509 atm.

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in each combination that formed a reactoin, there area total of 4 ions involved, but only one cation and one anion come together to make the precipitate. what doo you think happens with the other 2 ions?

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An insoluble ionic solid known as the precipitate is created during precipitation reactions when the cations of one reactant and the anions of another reactant present in aqueous solutions come together.

Solids can occasionally develop in the reaction between two aqueous solutions. The substance is known as a precipitate.

A double-replacement reaction produces the majority of precipitates. When two compounds' ions swap places with one another in an aqueous solution, the process is known as a double-replacement reaction. A, B, X, and Y are all ions in the equation AX + BY AY + BX.

When the ions of a chemical have separated in an aqueous solution, the result is an ionic solution. When two aqueous solutions are combined, a reaction occurs. This is when you discover whether or not a precipitate will form. If the end result of the ion interaction is insoluble in water, a precipitate results.

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How do you calculate mass at STP?

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The formula D= M/V is used at STP where,

M is equal to the molar mass and,

V is molar volume of a gas (22.4 liter/mole).

At Standard Temperature and Pressure (STP), 1 mole of any gas will occupy a volume of 22.4 L.

The Ideal Gas Law, along with a balanced chemical equation, can be used to solve for the amount, either in volume or mass, of gas consumed or produced in a chemical reaction.

The molar mass of a gas can be derived from the ideal gas law, PV=nRT , by using the definition of molar mass to replace n , the number of moles.

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Lead is less active than zinc but more active than copper. Predict the results you would have gotten if you placed lead metal into
separate solutions of zinc nitrate and copper (II) nitrate.

A. Lead would react with both zinc nitrate and copper (II) nitrate
B. Lead would react with copper (II) nitrate, but not zinc nitrate
C. Lead would not react with either zinc nitrate or copper (II) nitrate
D. Lead would pact with zinc nitrate, but not copper (II) nitrate

Answers

i think it’s a.lead would react with both zinc nitrate and copper

is the synthesis of ozone, o3, from oxygen, o2, an example of an exothermic or endothermic reaction?

Answers

The answer is endothermic

what is the electronic geometry (the arrangement of all electron pairs) around the central atom of nh3

Answers

Pyramidal is the electronic geometry (the arrangement of all electron pairs) around the central atom of nh3.

In chemistry, a trigonal pyramid is a molecular shape that resembles a tetrahedron and has one atom at the top and three at the corners of the base (not to be confused with the tetrahedral geometry). The molecule belongs to point group C3v when all three of the atoms in the corners are the same. The pnictogen hydrides (XH3), xenon trioxide (XeO3), the chlorate ion, ClO 3, and the sulfite ion, SO2 3 are some molecules and ions with trigonal pyramidal structure. Trigonal pyramidal-shaped molecules are sometimes referred to as sp3 hybridized in organic chemistry. According to the AXE technique for the VSEPR theory, the classification is AX3E1.

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Which one of these sentences is appropriate for a formal lab report in CHM113 lab? O Three more trials were conducted and the data was recorded. O First, record the seven concentrations of the red dye which...... O The corvet was whipped with a soft tissue and then........ The error occurred because Tim spilled the solution. o We got a good yield.

Answers

The appropriate sentence is three more trials were conducted and the data was recorded. This record show that it is the concentration of the solute.

In chemistry, attention is the abundance of a constituent divided by the entire extent of a combination. several kinds of mathematical descriptions can be outstanding: mass awareness, molar awareness, range attention, and volume concentration.

The awareness of the solution tells you the way much solute has been dissolved within the solvent. as an example, in case you upload one teaspoon to 2 cups of water, the attention may be mentioned as 1 t salt per 2 c water. The vinegar label will file that the solution is 5% via weight acetic acid.

The concentration of a Solute. There are basic ways of reporting the concentration of a solute in a solvent, via reporting the mass of the solute in a given volume, or the variety of moles of solute in a given quantity.

Therefore, the appropriate sentence is three more trials were conducted and the data was recorded. This record show that it is the concentration of the solute.

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in general, as you go across a period in the periodic table from left to right: (1) the atomic radius ; (2) the electron affinity becomes negative; and (3) the first ionization energy . question 26 options: a) decreases, decreasingly, increases b) decreases, increasingly, decreases c) increases, increasingly, decreases d) decreases, increasingly, increases e) increases, increasingly, increases

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Option (b) is correct. Atomic radius decreases, electron affinity increases and ionization energy decreases when we move from lrft to right in the periodic table.

When we move from left to right across a periodic table, the atomic radius decreases. With increase in atomic number, the nuclear charge increases but the number of shells in the atoms of all the elements in a period remains the same. On moving from left to right across a period, electron affinity increases. With increase in atomic number, the nuclear charge increases but the number of shells in the atoms of all the elements in a period remains the same. The ionization energy is the energy required to completely remove an electron from a gaseous atom or ion. Ionization energies increase moving from left to right across a period. Ionization energy decreases moving down a group.

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list at least 3 structural properties of molecules that were not accurately represented by the model kits.

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The structural properties of molecules that were not accurately represented by the model kits include:

Bond angleBond lengthShape of the molecule

What is bond angle?

Bond angle is the angle formed by two covalent bonds that originate from the same atom. The bond length of a molecule is the distance between the nuclei of two chemically bonded atoms. It is roughly equal to the sum of the two bonded atoms' covalent radii.

The position of a molecule's nuclei and electrons determines its shape. The electrons and nuclei gravitate toward positions that minimize repulsion while increasing attraction.

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A penny ha a total of 3. 1g. Zinc make up 2. 9g of the penny. What i the % by ma of zinc in the penny?

Answers

The nuclear energy required to separate all the neutrons and protons from each other is 1.58×10²⁵ MeV.

Number of atoms in a 3g coin= 6.023×10²³ × 3/63

= 2.868×10²²

Each copper atom has 29 protons and 34 neutrons.

Thus, the mass defect of each atom is 29 × 1.00783 + 34 ×1.00867− 62.92960 = 0.59225u.

Total mass defect of all atoms = 0.59225u×2.868×10²²

=1.6985×10²² u.

Thus, the nuclear energy required=1.6985×10

22 ×931MeV = 1.58×10²⁵ MeV

What is nuclear energy?

Nuclear energy is the use of certain nuclear reactions to produce electricity. Nuclear energy can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Currently, the vast majority of nuclear electricity is produced by nuclear fission of uranium and plutonium in nuclear power plants.

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Four solutes are added to a solvent. All solutes have the same mass and solubility. The surface areas of four solutes are 2 mm2, 4 mm2, 6 mm2, and 10 mm2. Which solute will dissolve the quickest? 2 mm24 mm26 mm210 mm2.

Answers

Of the four solutes added to a solvent, the one with the smallest surface area (2 mm2) will dissolve the fastest.

Reasoning

Superficial area

The surface area or particle size especially affects the rate of solubility.

The greater the surface area (smaller particle size) the faster it dissolves. This is evidenced by the fact that a sugar cube dissolves more slowly than granulated sugar.

Solubility rate

The rate at which a solute dissolves depends on the size of the solute particles.

Dissolution is a surface phenomenon, since it depends on solvent molecules colliding with the external surface of the solute.

A given amount of solute dissolves faster when it is ground into small particles, rather than large chunks, because more surface area is exposed.

Other Factors Affecting Solubility

In addition to solute surface area, temperature and pressure influence the balance of intermolecular forces between solvent and solute, and the change in entropy that accompanies solvation, thus changing solubility.

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determining the molar mass of a gas (36 points) trial 1 trial 2 (if needed) volatile liquid used expected molar mass of volatile liquid (g/mol) mass of flask, foil and rubber band (g) mass of flask, foil, rubber band and condensed liquid (g) mass of condensed liquid (g) * volume of flask, in liters (l) barometric pressure (mmhg) atmospheric pressure (atm) * temperature of boiling water (k) experimental molar mass of unknown liquid (g/mol) * percent error*

Answers

1 = Make a list of the known quantities and formulate the issue.

2 = n=PVRT=0.987atm×0.677L0.08206L⋅atm/K⋅mol×296K=0.0275mol. Get the molar mass now by dividing g by mol.

The molar mass of a gas at STP can be determined in what way?

At STP, the molar volume of a gas (22.4 liter/mole) and molar mass (22.4 lb/mole) are employed in the calculation D=M/V. Remember the Avogadro Principle for Gases (1811), which states that equal volumes of all gases under the same conditions contain the same amount of molecules.

The molar gas equation is what?

PV = nRT, where n is the number of moles of the given gas, P is the gas's pressure, V is its volume, T is its absolute temperature, and P is the gas's volume.

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List at least 3 structural properties of molecules that were not accurately represented by the model kits.

Answers

Molecular models are classified into three types: ball-and-stick, skeleton, and space-filling. For tiny compounds, the depiction of bond angles is quite precise, and the visualisation of molecular structure is good.

What characteristics do molecular compounds have?

At normal temperature, most molecular compounds are gases or liquids, and those that are solids are soft and malleable. They have low melting and boiling temperatures, are poorly soluble, and are poor electrical conductors.

The attribute of the d n, a that cannot be proven using the model is the one type of structure that allows the atom to replicate itself, the amid cell division, thus the d n a contains two buiopolymers and two buiopolymous trans, which are known as poly Nucleotides.

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In this chemical equation, why is the number of atoms the same on each side of the arrow? chemical reactions reduce matter but create energy. Chemical reactions produce new matter. Matter cannot be created or destroyed.

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Matter can neither be created nor destroyed.

4Fe + 3O₂ → 2Fe₂O₃

Because this chemical equation complies with the rule of conservation of matter, there is the same number of atoms on both sides of the arrow.

The law of conservation of matter states that matter can neither be created nor destroyed. It just changes into different forms. Or in accordance with this law, the total mass of the products and reactants stays identical during any physical or chemical change. Therefore, it's crucial to maintain the same number of moles on both sides of the chemical reaction in order to uphold the rule of conservation of matter.

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Even though your question is incomplete, I believed you were referring to this type of question:

4Fe + 3O₂ → 2Fe₂O₃

In this chemical equation, why is the number of atoms the same on each side of the arrow?

a. Chemical reactions reduce matter but create energy.

b. Chemical reactions produce new matter.

c. Matter can neither be created nor destroyed.

Students in chemistry class have been given the assignment to use flame test emission data to determine the identity of an unknown substance. When the students put a sample of the unknown compound in the flame, blue and green colors were visible. What could be one explanation for these results?.

Answers

One explanation for the vision of blue and green colors in the flame when students in chemistry class used this test to determine the identity of an unknown substance is that the sample contains barium and copper (I).

What is the flame test?

It is an analytical method used in chemistry to identify the presence of certain elements, mainly metal ions.

The principle of this test is based on the characteristic emission spectrum of each element, although the color of the flame can also vary due to temperature.

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a 525.6 ml sample of carbon dioxide was heated to 351 k. if the volume of the carbon dioxide sample at 351 k is 774.9 ml, what was its temperature at 525.6 ml?

Answers

The temperature at 525.6ml is 236.52k

what is Charles law?

Assuming that the gas's pressure remains constant, the volume of a given mass of gas is precisely proportional to its absolute temperature. According to Charles' Law, a given amount of gas expands to a larger volume at constant pressure by a factor of 1/273 for every degree the temperature rises.

The formula for the relationship between volume and temperature is

V1 / T1 = V2 / T2, where V1 and T1 represent the starting volume and the absolute temperature, and V2 and T2 represent the end volume and the absolute temperature (the Kelvin temperature, not the Celsius temperature).

V1/T1 = V2/T2

V1= 525.6ml

T1= unknown

V2= 779ml

T2=351k

T1 =V1*(T2/V2)

    = 525.6ml * (351/779)

    =525.6*0.450

    =236.52k

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which labeled structure is in charge of editing and sorting incoming sensory stimuli, and controlling information entry into the cerebral cortex?

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Thalamus is in the charge of editing and sorting incoming sensory stimuli and controlling information entry into the cerebral cortex.

Thalamus is our body’s information relay station. All information from your body’s senses except smell must be processed through your thalamus before being sent to your brain’s cerebral cortex for interpretation. Your thalamus also plays a role in sleep, wakefulness, consciousness, learning and memory. Sensory impulses travel through nerve fibers from your body through brain structures to your thalamus. Specialized areas of your thalamus called nuclei, are each responsible for processing different sensory or motor impulses received from your body and then sending the selected information through nerve fibers to the related area of your cerebral cortex for interpretation.

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Which of these might decrease the length of a mortgage loan? property taxes insurance amount owed collateral. Using the what-if function in excel to make a decicion is considered a type of __________. Please answer And please explain the work A 213 kg crate slides 7. 6 m until coming to a stop after being pushed by a large man. The effective coefficient of kinetic friction between the crate and the surface is 0. 37. Calculate the work done by friction. Experiment Solution Electrodes - 0.1 M Naci 0.1 M NaBr 0.1 M Nal 0.1 M AgNO3 0.1 M CuSO4 0.1 M CuSO4 Graphite Graphite Graphite Graphite Graphite Copper two CS Scanned with CamScanner Solution pH* NaCl Observation at Cathode# breaking down bubbling NaBr Observation at Anode# bubbles turns yellow turns yellow (stronger) bubbles Nal bubbles silver forming AgNO3 CuSO4 (C electrode) CuSO4 (Cu electrode) turned red/orage bubbles gained copper no reaction 34) the amount that individuals would have been willing to: group of answer choices a) pay minus the amount that they actually paid, is called consumer surplus b) pay plus the amount that they actually paid, is called consumer surplus c) pay minus the amount that they actually paid, is called deadweight loss d) b and c What is the Brooklyn Bridge and why is it significant? what is price competition? sellers compete with each other by charging as high a price as possible. sellers differentiate products so they can charge a higher price. sellers force competitors to lower their prices until the competitors have losses. sellers try to win customers through charging as low a price as possible A personal foul occurs when a player has unsportsmanlike conduct, illegal entry or excessive timeouts.a. Trueb. False how did changes in navigation and multiple-masted cargo ships impact trade? a. merchants gave up using overland trade routes such as the silk road. b. political authorities did not profit as much from maritime trade as they had from caravan trade. c. inland oases remained vital as transshipment points for goods to the coasts. d. most shipping firms were government owned. a dispute resolution mechanism negotiated into most collective bargaining agreements is a (an): a. mediation service b. shared decision-making c. critical incidents method d. grievance mechanism qyizlet Find the solutions to x = 28. 17. Which of the following is positive body language to use when speaking? Fold your arms or cross your legs Don't make eye contact Do not show your body Keep arms open and use open gestures A. Describe a procedure using these supplies that caleb may follow to test his B. Explain the most likely reason caleb uses the same wooden block for each testC. Identify the independent and dependent variables for this investigation in a test of hypothesis the p-value was 0.24 . if the level of significance is 10 % . what is the potential type of statistical error ? A foodhandler opens a container of ultra-high temperature pasteurized (UHT) milk from the dry-storage area and uses half of the container. What should be done next?a. The remaining contents should be poured into an airtight container and returned to the dry-storage area.b. The container should be stored in the cooler.c. The container should be returned to the dry-storage area.d. The container and its contents should be thrown away. the amount of goods and services you can buy with a dollar in the global market ______. ruby company is considering a project with an initial investment of $300,000 that will yield annual net cash flows of $90,576 and will be depreciated at $75,000 per year over its 4-year life. what is the approximate internal rate of return? (note: round the discount factor to five decimal places.) How many times is -4 used as a factor in the expression (-4)5? Write the numerical expression as repeated multiplication. who is nassredine et sont fils what is the story in english