Arrange the boiling points of the aqueous solutions, relative to pure water: Assume complete dissociation for the ionic compounds. Highest boiling point 0.38 m CzHs OH 0.32 m NH; 0.19 Naz SO4 0.11 m NaCl HzO Lowest boiling point

The possible volume of the resulting solution if a student adds 14.0 mL of water to 12.0 mL of alcohol is 26.0mL (option D).

Volume is a measure of the amount of space that matter occupies. Matter is defined as a physical substance that occupies space and has a mass.

In physical sciences like chemistry, the standard unit of volume is cubic metres (m³). From this, other units are derived including litre (L) and millilitre (mL).

According to this question, a student adds 14.0 mL of water to 12.0 mL of alcohol. These substances are both liquid meaning that the volume of the resulting solution will increase as follows:

12 + 14 = 26.0mL

Hence, option D is the correct answer.

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The molar concentration of H3O in a cola that has ph of 2.670 is 7.33×10−4M  

what is phosphoric acid?

Orthophosphoric acid, Mono phosphoric acid, or phosphoric(V) acid are all names for phosphoric acid, an inorganic solid that contains phosphorus and has the formula H 3PO 4. It is typically found as an 85% aqueous solution, which is a non-volatile, colourless, and odourless syrupy liquid.

Since diluted solutions have a tasty acid flavour, they are also employed as food additives in water treatment products as well as in soft drinks and other prepared foods to give them an acidic taste.

In a cola with a pH of 2.670, the following formula can be used to get the molar concentration of [H3O+]:

[H3O+] =10−pH

[H3O+] =10−2.670

[H3O+] =7.33×10−4M

Cola's high phosphoric acid content can interfere with the body's control of bone metabolism and lessen calcium absorption from food when consumed in big quantities. Due to this, those who are at risk of osteoporosis are frequently advised to limit their cola consumption.

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2g is the amount of NaOH needed for preparation of 200 mL of 0.25 N solution

Given that;

Concentration of Solution = 0.25 N

Volume of solution = 200 ml = 0.2 L

To find the mass of NaOH we will use following equation ;

Normality(N) = [tex]\frac{Mass of NaOH(m)}{Molar mass of NaOH(M)}[/tex] ×[tex]\frac{1000}{Volume(in ml)}[/tex]

Molar mass of NaOH = 22 + 16 + 2 = 40g/mol

Thus,0.25 = [tex]\frac{Mass of NaOH(m)}{40}[/tex] × [tex]\frac{1000}{200}[/tex]

Mass of NaOH = 0.25 × 40 × 0.2

Mass of NaOH = 2 g

So, 2g of NaOH is Used to prepare 200ml of 0.25N  solution

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The js joint has an 18% market share of the fast-food market in India. The market is worth $12 million per year, so the annual sales of js joint will be (c) 2.16 million per year.

Market share is the percentage of a market's or industry's total sales that a specific company generates over a specific period of time.  By dividing a company's entire sales revenue by the total industry sales throughout a fiscal year, one can determine its market share. The market share of fast food in India is 18%. Each year, the trade is valued $12 million.

The corporation calculates its annual sales as follows:-

The annual sale is equal to the market value multiplied by the percentage of the market share.

    Annual sale = $12,000,000 x 18%

    Annual sale = $2,16,000,000 annually

    Annual sale = $2.16 Million / year

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The total energy released by this quantity of ²¹⁰Po assuming every atom decays is 2.935×10⁶J.

When there is a lower-energy nuclear configuration to which an atom can transition, the atom radioactively decays. An atom's actual decay event takes place at random and is not brought on by aging or other changes over time.

²¹⁰Po releases energy by ∝-decay.

²¹⁰₈₄Po → ⁴₂He + ²⁰⁶₈₂Pb

Molar amass:

⁴₂He = 4.00151 g/mol

²⁰⁶₈₂Pb= 205.9745 g/mol.

²¹⁰₈₄Po = 209.98286 g/mol

Change of mass

Δm = 1 mol x {(4.00151g/mol +  205.9745 g/mol) - ( 209.98286 g/mol)}

Δm = -0.00685g

Δm = -0.00685g × 1kg/10³g

Δm = -6.85 X10⁻⁶ Kg

Change in energy for 1mol ²¹⁰₈₄Po

E = Δmc²

E = -6.85 X10⁻⁶ Kg × 3.00 × 10⁸m/s²

E = -6.165×10¹¹J   (- ve sign indicates release of energy)

Now, number of mol of ²¹⁰₈₄Po in mg

number of mol of ²¹⁰₈₄Po in mg = 1mg×1g/10³mg×1mol/209.98286g

number of mol of ²¹⁰₈₄Po in mg = 4.76×10⁻⁶mol

Energy released by 1mg ²¹⁰Po is = 6.165×10¹¹J× 4.76×10⁻⁶mol

Energy released by 1mg ²¹⁰Po is = 2.935×10⁶J.

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The electronic configuration of neutral atom of selenium is

           1s2 2s2 2p6 3s2 3p6 3d10 4s2  4p4.

Chemical element selenium has the symbol Se and its atomic number is 34. It comes in the category of non-metals. Selenium consists of 34 electrons distribution in its 4 orbits. Valence electrons are the electrons which are located in the outermost shell of the atom or molecule. Selenium has 6 electrons in its outermost shell

So electronic configuration of selenium define as:

     1s2 2s2 2p6 3s2 3p6 3d10 4s2  4p4.

The neutral atom in selenium is Ar. so, The electronic configuration of Argon  is represented as ,

        1s2 2s2 2p6 3s2 3p6

The number of valence electrons is defined as the number of electrons present in the outermost shell of the atom. So, in the case of selenium, there are 6 valence electrons. so, like this we can write the electronic configuration of selenium.

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The equations describing these laws are special cases of the ideal gas law, PV = nRT, where P is the pressure of the gas, V is its volume, n is the number of moles of the gas, T is its kelvin temperature, and R is the ideal (universal) gas constant.

By rearranging the ideal gas law, P=n(RTV)=nconst, it can be demonstrated that the pressure of a sample of gas is directly proportional to the number of moles of gas present when volume and temperature are maintained constant. The common measurement of pressure is the pascal (Pa). The kilopascal is the most practical measure for measuring commonplace gas pressures since a pascal is a relatively tiny unit of pressure (kPa). There are 1000 pascals in a kilopascal. The atmosphere is yet another widely used pressure measurement unit (atm).

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₁H, ₂H and ₃H are examples of are isotopes.

Isotopes are  or more styles of atoms that have the same atomic range and role in the periodic desk, and that vary in nucleon numbers due to special numbers of neutrons of their nuclei.

An isotope is certainly one of two or more varieties of the identical chemical detail. Specific isotopes of an element have the equal range of protons in the nucleus, giving them the identical atomic variety, however a specific quantity of neutrons giving every elemental isotope a exceptional atomic weight.

Like the whole lot we see within the world, isotopes are a type of atom, the smallest unit of depend that keeps all the chemical properties of an element. Isotopes are sorts of a chemical detail with precise residences.

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Hybridization would be sp2 if the bond angle between the two adjacent angle is 120 degrees.

What is hybridization ?

The idea of combining two atomic orbitals to create a new class of hybridised orbitals is known as hybridization in chemistry. This mixing typically produces hybrid orbitals with completely distinct energies, geometries, etc.

An atom's s and two p orbitals from the same shell combine to generate three equivalent orbitals when sp2 hybridization occurs. The newly created orbitals are known as sp2 hybrid orbitals.

Angles in the trigonal symmetry are found to be at 120 degrees and they show sp2 hybridization.

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As the electrostatic force, Fe, of the ionic compounds increases, the melting point of the ionic compounds will go up.

The melting point of a solid is the temperature at which the solid begins to melt.

The melting point of a pure solid occurs at a definite temperature. During the process of melting, the temperature of the solid remains constant as all the heat supplied to the substance is used to break up the energy of the intermolecular forces between the particles of the substance.

Hence, the stronger the intermolecular forces between the particles of a substance, the higher will be the melting point.

For ionic compounds, the stronger the electrostatic forces of attraction between the ions, the higher the melting point of the ionic compound will be.

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The meter was defined in 1963 as the length equal to 1650763.73 wavelengths of the orange red radiation emitted by the kryton-86 atom. 606 nm is the wavelength.

Radiation is the name for energy that comes from a source and travels through space at the speed of light. In addition to being accompanied by an electric field and a magnetic field, this energy possesses wave-like characteristics. The term "radiation" can also refer to electromagnetic waves. Electromagnetic wave spectrum electromagnetic spectrum presented in its whole. Different types of electromagnetic radiation can be found in the natural world. Among them is visible light. Gamma rays, X-rays, and ultraviolet light are the three radiation types with the most energy. X-rays and gamma rays have a lot of energy. When they interact with atoms, they have the capacity to rob electrons from them, ionizing the atom. Protons and neutrons are mixed in unstable ways in radioactive atoms. An unstable atom will release energy on its own to move into a more stable state, which is radioactivity. The energy that is released by a radioactive atom is known as ionizing radiation. The term "radioactive isotope" refers to radioactive atoms of the same element with varying neutron counts.

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Pressure has little effect on the solubility of liquids and solids because they are almost incompressible is true.

The solubility of liquids and solids is mostly unaffected by external pressure. On the other hand, as the partial pressure of the gas above a solution rises, so does the solubility of gases.

Therefore due to variations in pressure, liquids and solids hardly ever vary in solubility. When would be expected, as pressure rises, gases become more soluble. According to Henry's Law, a gas's solubility in a liquid is inversely correlated with its pressure above the solution's surface.

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The overall reaction of this process is called endothermic process.

What is endothermic process?

Chemical reactions classified as endothermic occur when the reactants absorb heat energy from their surroundings to produce products. By lowering the temperature of the area around them, these processes generate a cooling effect.

What is reaction  ?

In a chemical reaction, one or more substances, also referred to as reactants, are transformed into one or more unique compounds, usually referred to as products. Substances are made up of chemical compounds or chemical components.

Therefore, the overall reaction of this process is called endothermic process.

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The final solution has a molarity of 0.652 M. This is derived using the ideal gas equation expression and molarity relation.

Molarity-Molarity (M) is the amount of a substance in a given volume of solution. Molarity is defined as the number of moles of a solute per liter of solution. The molar concentration of a solution is also known as its molarity.

M=n/v

n=moles of solute

v=litres of water

At 33°C and 735 Torr, 12.7 l of argon is dissolved in enough water to yield a final volume of 0.750l.

P = 735.0 torr

= (735.0/760) atm.

= 0.9671 atm.

V = 12.7 L

T = 33.0 o C

= (33.0+273) K

= 306 k

using ideal gas equation

P * V = n*R*T

0.9671 atm. * 12.7 L = n * 0.08206 atm. L/mole . K * 306 K

 n = 0.4891 mole

using molarity formula,

Molarity = number of mole / final volume

= 0.4891 mole / 0.750 L

= 0.652 M (resulting solution)

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Gas rule in combination: P1V1/T1 = P2V2/T2. Calculate pressure, volume, and temperature using the gas laws.

The following equation describes how magnesium reacts with hydrochloric acid: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2 (g) This experiment can be used to demonstrate the production a single replacement reaction, the normal metal-acid reaction, or the reaction of hydrogen gas.

P1 = 767.11 mm of Hg

V1 = 42.54 ml

T1 = T2 = constant

P2 = 13.27 mm hg

V2 = ?

P1V1T1 = P2V2T2

767.11 × 42.54 = V2 ×13.27

V2 = 767.11 × 42.54 / 13.27

V2 = 2454.75 ml

The liquid level difference to be 111.27

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This reaction is catalyzed by an enzyme called a hydrolase, and it takes place in a matrix.

By converting l-arginine to l-ornithine and urea, the ureohydrolase arginase, an enzyme that contains manganese, catalyzes the last stage in the urea cycle to get rid of harmful ammonia.

It is changed by the enzyme arginase into L-ornithine, a building block for polyamines and urea, both of which are necessary for the urea cycle. Arg is a precursor of creatine, which is responsible for Arg catabolism, the production of agmatine, and the synthesis of proteins. Creatine is crucial for the energy metabolism of muscle, neuron, and testicles.

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Answer: Carbon dioxide (CO‚) is composed of one carbon atom and two oxygen atoms. Therefore, the percent composition of carbon in carbon dioxide is approximately 33.3%.

Explanation:

Ideal gas law is valid only for ideal gas not for vanderwaal gas. To solve such, we need to know the relation between rate of effusion and molar mass of gases. Therefore, the molar mass of unknown gas is 48 g/mol. The correct option is option E.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between rate of effusion of gases and their molar masses can be given as:

rate of effusion of unknown gas/rate of effusion of nitrogen gas=√molar mass of nitrogen /molar mass of particular gas

Substituting all the given values we get

2.5 × 10⁻⁶÷ 3.3 × 10⁻⁶=√28÷ molar mass of unknown gas

0.56=28g÷ molar mass of unknown gas

molar mass of unknown gas =48 g/mol

Therefore, the molar mass of unknown gas is 48 g/mol. The correct option is option E.

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O Three more trials were conducted and the data was recorded.

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.

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The information is not required on a workplace label is the particular language border.

The workplace label not need to required the particular border of the language but the do need the following things that is the data of the product identification for the secure product handling. the workplace label is useful for the identification of the hazardous chemical that has been transferred the one of the container to the other container. the name of the chemical should be written as same as on the SDS.

Thus, the particular language border is the information  is not require in the workplace label.

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To write the net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and perchloric acid are combined, first perform the complete ionic equation and then identify and eliminate the ions that do not participate.

A net ionic equation shows only the chemical species involved in the reaction

A net ionic equation is written with the smallest possible integer values as stoichiometric coefficients.

HClO4 (l) + NaOH (aq) → NaClO4 (aq) + H2O (l)

H+(aq) + OH−(aq) → H2O(l)

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The moles of SO₂ are there in 22.4 L of gas at STP is one mole.

According to the ideal gas equation we get :

P V = n R T

given that :

P = pressure of the gas = 1 atm

V = volume of the gas = 22.4 L

n = moles

R = constant = 0.823 atm L / mol K

T = temperature  = 273.15 K

substituting the values we get :

n = P V / R T

n = ( 1 × 22.4 ) / ( 0.823 × 273.15)

n = 1 mol

Thus , moles of  SO₂ gas is 1 mole.

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The mass of the corn oil is 39.002 g.

Define density.

The ratio of mass to volume forms the compound measure known as density. The amount of matter per unit volume is measured by density.

Given:

Density of corn oil =  0.88 g/ml

Volume of corn oil = 44.32 ml

Mass= ?

To calculate the mass, density or volume of an object, we use the formula:

Mass = density * volume

where M is the mass,

D is the density, and

V is the volume of an object.

By substituting the values in the above formula, we get

Mass = density * volume

Mass

= 0.88 g/ml* 44.32 ml

= 39.002 g

Therefore, the mass of the corn oil is 39.002 g.

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The mass of sodium bicarbonate (NaHCO3) in their sample is 84.007 g/mol.

To get the mass percent of an element in a compound, multiply the result by 100 after dividing the mass of the element in 1 mole of the compound by the compound's molar mass.

An Alka-Seltzer pill has a sodium bicarbonate content of roughly 1.9 grams (0.22 mol) and a citric acid content of roughly 1.0 grams (0.005 mol). The sodium bicarbonate and citric acid in the tablet interact when the tablet is submerged in water, resulting in sodium citrate in solution and the release of carbon dioxide gas.

Calculation:

Molar mass of NaHCO3,

Molar mass of  NaHCO3 = Molar mass of Na + Molar mass of H + Molar mass of C + 3*(molar mass of O)  

⟹ Molar mass of  NaHCO3  = 22.9897 + 1.00794 + 12.0107 + 47.9982 = 84.00654 g/mol

⟹ Molar mass of  NaHCO3 = 84.007 grams/mol.

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An Alka-Seltzer tablet contains about 1.9 grams (0.22 mol) of sodium bicarbonate and about 1.0 gram (0.005 mol) of citric acid. When the tablet is placed in water, the citric acid reacts with the sodium bicarbonate, producing sodium citrate in solution and releasing carbon dioxide gas.

What is the solution of NaHCO3?

Sodium bicarbonate (NaHCO3) (1 M)

Dissolve 12.6 g of NaHCO3 in 100 mL of H2O. Adjust the volume to 150 mL to yield a final concentration of 1 M. Filter-sterilize the solution, and store it at room temperature.

How can you tell how much Na2CO3 and NaHCO3 are in a mixture?

Na2CO3 and NaHCO3 concentration estimation in a mixture: Weigh the combination precisely at 2.0 g, and then create a distilled water solution in a standard flask of 250 ml. Use phenolphthalein as an indicator while you gradually titrate 25 ml of this solution against regular hydrochloric acid. To concord, repeat (Vp ml).

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The solution to the problem gives you the potassium chloride, KCl, solubility in water at 20°C, which is stated to be 34 g/100 g H2O. This indicates that at 20 °C.

34 g of dissolved salt will be present in a saturated potassium chloride solution for every 100 g of water. One or more solutes combined uniformly in a solvent form a solution. One typical example of a solution is adding sugar cubes to a cup of tea or coffee. Solubility is a characteristic that makes sugar molecules more soluble. Consequently, the word "solubility" can be used to describe a quality of a substance (solute). The metal halide salt potassium chloride (KCl, often known as potassium salt) is made up of both potassium and chlorine.

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The molar mass of an unknown non-electrolyte is 165g/mol.

What is molar mass?

The molar mass of a chemical compound is defined in chemistry as the mass of a sample of that compound divided by the amount of substance, which is the number of moles in that sample, measured in moles. The molar mass of a substance is a bulk, rather than a molecular, characteristic.

∆T = imK 

∆T= 5.5 - 5.14 = 0.36 degrees 

Van't Hoff factor for a non-electrolyte is 1; molality is moles of unknown per kilogram of solvent; and constant is 5.12

When we solve for 'm', we have...

m = ∆T/(i)(K) = 0.36/5.12 m = 0.0703 moles unknown/kg solvent

Since the solvent has a mass of 50 g that is = 0.050kg

0.0703 mol/kg x 0.050 kg = 0.00351moles

molar mass = 0.58g/0.00351 mol = 165 g/mol

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The iso paraffins have the same hydrogen to carbon ratios as the normal paraffins because to prevent cooking.

What is paraffin?

A complex mixture of hydrocarbons that is derived specifically from the distillates of wood, coal, petroleum, or shale oil and utilized mostly in coating and sealing, candles, rubber compounding, pharmaceuticals, and cosmetics. It is a waxy, crystalline, combustible substance.

What is hydrogen?

The most fundamental member of the chemical element family is hydrogen (H), a colorless, odorless, tasteless, combustible gaseous material.

Therefore, the iso paraffins have the same hydrogen to carbon ratios as the normal paraffins because to prevent cooking.

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Polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, the solubility of sugar and salt is most affected by temperature.

Solubility shows the extent of solubility of a solute in solvent to make a solution. Solute is substances that is present in small amount. solvent is a substance that is present in large amount. Its SI unit is gram per liter or g/L.

Bond strength affect the solubility of a solute in solvent. weaker the bond strength is, more the solubility is. The weaker bond can be easily broken by water molecule. The solubility of sugar and salt is most affected by temperature. On increasing the temperature, the solubility of sugar increases in a solution.

Therefore, the solubility of sugar and salt is most affected by temperature.

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