g under constant pressure conditions, a sample of hydrogen gas is cooled until its final volume and temperature are, respectively, and its final temperature is 96.10 kelvin
Charles Slow asserts that the volume occupied by a certain quantity of gas is directly inversely related to that gas's absolute temperature. The steady pressure is Charles. In the case of constant pressure, v 1 byt 1 and p 2 byt 2 are equivalent. It is equivalent to 7.70 liters and 23 degrees, while 2 is equivalent to 2.50 and 1 to 2.50. We are given 96.10 kelvin.
A sample of hydrogen gas is cooled to a final volume and temperature of under constant pressure conditions, and the final temperature of the hydrogen gas is 96.10 kelvin.
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how many grams of c6h12o6 would contain 15g of carbon
One mole or 180 g of glucose contains 72 g of carbon. Thus, 37.5 g of glucose contains 15 g of carbon.
What is glucose?Glucose is the basic monomer sugar unit which polymerises to form carbohydrates. The formula of glucose is C₆H₁₂O₆. Glucose is formed by the combination of water and carbon dioxide.
The atomic mass of carbon = 12 g/mol
molar mass of C₆H₁₂O₆ = 180 g/mol.
C₆H₁₂O₆ contains 6 carbon atoms.
Thus, mass of 6 carbons = 6 × 12 g = 72 g
Hence, 180 g of glucose contains 72 g of carbon.
Now the mass of glucose which contain 15 g of carbon is :
= (15g × 180 g) / 72 g
= 37.5 g.
Therefore, the mass of C₆H₁₂O₆ containing 15 g carbon is 37.5 g.
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4. Which of the following is true for any atom?
A. atomic number = number of protons = number of electrons
B. atomic number = number of neutrons = number of electrons
C. mass number = number of protons = number of electrons
D. mass number = number of protons = number of neutrons
For every neutral atom, the atomic number is the number of protons, and the number of protons is equal to the number of electrons. Option A.
Components of atomsAtoms contain positively charged components known as protons, negatively charged components known as electrons, and neutral components known as neutrons.
Protons and neutrons are located in the nuclei of atoms while electrons are found outside the nuclei in the orbitals. For every neutral atom, the number of positively charged components (protons) always balances the number of negatively charged components (electrons).
Also, the atomic number of atoms is the number of protons in the nuclei of atoms. Thus, for neutral atoms, the number of protons equals the number of electrons which also equals the atomic number.
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What are strong and weak acids? In the following list of acids, separate strong acids weak acids: Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.
Strong acid : hydrochloric acid , sulphuric acid and nitric acid.
weak acid : citric acid , acetic acid and formic acid.
The strong acids are those which completely ionizes in the aqueous solution. the strong acid will losses more H⁺ ion when it dissolved in the water. The weak acid are those which are partially ionizes in the aqueous solution. the strong acid will losses few H⁺ ion when it dissolved in the water.
strong acids weak acids
hydrochloric acid citric acid
sulphuric acid formic acid
nitric acid acetic acid
Thus, citric acid , acetic acid and formic acid are the weak acid and hydrochloric acid , sulphuric acid and nitric acid are the strong acids.
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what are phosphorus and nitrogen primarily used for? explain why these elements are so important (5 points).
suppose the temperature of a gas is 373.15 k when it is at the boiling point of water. what then is the limiting value of the ratio of the pressure of the gas at th
117 grams of liquid water are in a cylinder with a piston maintaining 1 atm (101325 Pa) of pressure. It is exactly at the boiling point of water, 373.15 K. We then add heat to boil the water, converting it all to vapor. The molecular weight of water is 18 g/mol and the latent heat of vaporization is 2260 J/g.
What is the parameters?Let's state the parameters given.
Given that:
mass (m) = 117 gram
specific latent heat of vaporization (L) = 2260 J/g
Pressure (P) = 1 atm or 101325 Pa
Temperature (T) = 373.15 K
molecular weight = 18 g/mol
i.e we are to find the heat energy which is denoted by Q = mL
Q = 117g × 2260 J/g
= 264420 J
= 264.42 KJ
and the water vapor takes up some final volume
If we assume that the vapor is an ideal gas.
We can represent the parameters using the equation of an ideal gas:
PV=nRT
where;
P = 1 atm or 101325 Pa
n = no of moles of the water
n = mass/molecular weight
= 117/18
= 6.5 mole
R = 8.314
T = 373.15
= 0.199 m³
At Constant Pressure, the work done by the vapour in pushing on the piston can be calculated as:
W =(ΔV)
= 101.325 × (0.199 - 0)
= 101.325 × 0.199
= 20.16KJ
Let ΔU = water internal energy change
Q = Heat Energy
W = work done by the vapour in pushing on the piston
Q = ΔU + W
ΔU = - Q + W (by multiplying the left hand side with minus (-))
ΔU = Q - W
ΔU = 264.42 - 20.16
ΔU = 244.26KJ
Therefore, The molecular weight of water is 18 g/mol and the latent heat of vaporization is 2260 J/g.
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Which electron i, on average, farther from the nucleu: an electron in a 5d orbital or an electron in a 4d orbital?
According to Aufbau Principle electrons are to be filled in a pattern that is, starting from lower-energy atomic orbitals electrons will be filling into the higher-energy orbitals.
So, electrons will be filled in the 4d orbital before 5d orbital.
Also the electron in 4d orbital will lie closer to the nucleus as compared to the electron in the 5d orbital.
as the principle quantum number for the electron in 4d orbital is 4, which means the electron is present in shell 4, i.e. n=4.
Whereas, the principle quantum number for the electron in 5d orbital is 5, which means the electron is present in shell 5, i.e. n=5.
If we see Neil Bohr's atomic model,
Electrons in 4th shell will be closer to the atomic nucleus than that of electron in 5th shell.
For clarification, you can see the figure.
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Draw the structures of organic compounds a and b. Indicate stereochemistry where applicable.
The steric hindrance shown here for butene and 1,2 dibromobutane is cis 2 butene y trans 2 butene.
The better electricity price (and slower response rate) because of the method of large atoms or businesses in a chemical response, as compared to a comparable response related to smaller atoms or businesses.
Steric dilemma is the slowing of chemical reactions because of steric bulk. It is generally manifested in intermolecular reactions, while dialogue of steric outcomes frequently recognition on intramolecular interactions. Steric dilemma is frequently exploited to manipulate selectivity, which include slowing undesirable side-reactions.
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when solid sodium hydroxide dissolves in water, the δh for the solution process is −44.4 kj/mol. if a 13.9 g sample of naoh dissolves in 250.0 g of water in a coffee-cup calorimeter initially at 23.0 °c. what is the final temperature of the solution? assume that the solution has the same specific heat as liquid water, i.e., 4.18 j/g·k.
The final temperature of solid sodium hydroxide dissolves in water is 355.88 kelvin.
A given amount of matter's heat capacity is the amount of energy needed to raise its temperature by one degree Celsius. While the heat capacity of 1 mole of a substance is known as its molar heat capacity, the heat capacity of 1 gram of a substance is referred to as its specific heat capacity (or specific heat). The equation q = mcT, where m is the mass of the sample, c is the specific heat, and T is the temperature change, can be used to determine how much heat is gained or lost by a sample (q).
Given
Mass of NaOH = 13.9 g
Mass of water = 250 gram
Specific heat of the solution = 4.18 j/g·k
Initial temperature = 23.0 °c or 296 kelvin
Heat evolved in process = −44.4 kj/mol
Q = mc (T₂ - T₁)
−44400 j/mol = 263.9 x 4.18 j/g·k x (T₂ - 296k)
T₂ = 355.88 k
Hence, final temperature of NaOH solution is 355.88 kelvin.
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Fill in the blank to make this statement true: (0,0) is a solution to _________ equation(s) in the form y=kx.
(0,0) is a solution to all equation(s) in the form y = kx.
When an equation is given in the form of y = kx, it shows direct variation, meaning that the y-intercept is 0. For example, lets take an equation in slope-intercept form, it has an equation of y = mx+b. Since there is an absence of "b", in the form y = kx, that means that the line must pass through the origin, or (0,0).
For any equation, (0,0) can be the solution if it is in the form of y = mx. Hence, the statement is (0,0) is a solution to all equation(s) in the form y=kx.
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Is phosphorus and chlorine polar or nonpolar?
Both phosphorus and chlorine are non-polar because the four atoms of phosphorus (P4) cancel each other out and remain non-polar, while the two atoms of chlorine (Cl2) exert equal but opposite forces on one another and cancel each other out.
All four phosphorus atoms are connected to one another in the tetraphosphorus molecule shown below. Each phosphorus atom shares the same properties, which results in an identical electronegativity. Tetraphosphorus is hence nonpolar since each phosphorus atom's electron attraction in the two opposite directions is the same, canceling out one another.
The shared pair of electrons in a chlorine molecule (Cl2) is equally attracted by the two chlorine atoms, resulting in a nonpolar bond. as a result, chlorine is non-polar molecule.
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Select the intermolecular force that is overcome when hexane is converted from a liquid to a gas. - London dispersion forces -dipole-dipole forces -hydrogen bonding -ion-dipole forces
The London dispersion force is the intermolecular force that is overcome when hexane is changed from a liquid to a gas.
The London dispersion force is what holds molecules together. The London dispersion force is the main force since hexene is a nonpolar molecule. The intermolecular force that results from the electrostatic force of attraction acting between atoms is known as the London dispersion force.
The weak force of attraction is London dispersion. It is a transitory force brought on by attractions. Thus, the London dispersion intermolecular force in acting ion the hexane converted from the liquid to the gas.
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What is meant by the iterative process?
The iterative process is the practice of building, refining, and improving a project, product, or initiative. Teams that use the iterative development process create, test, and revise until they're satisfied with the end result.
The iterative process is a technique research and development teams use to help them optimize their products, services and business processes. The process involves repeated trial-and-error style cycles, where researchers adjust each cycle according to what they learned in the previous iteration.
By using this method, teams can design planned changes for their processes and encourage steady improvements toward an end goal. Careful planning and consideration of feedback can help teams conduct successful iterative processes.
Typically, business development and marketing research professionals use the iterative process to help them address design concerns, improve business strategies, optimize product features or quickly adjust to market changes.
The method can used for a variety of businesses and applications. Teams in marketing, software development, engineering, education or design might all use this process to analyze products or processes within their business.
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The______layer lets the wavelengths of light conducive to life to pass through, while filtering out those that are harmful,
like most of the ultraviolet waves.
A. insolation
B. weather
C. air
D. conduction
E. ozone
F. ecological
G. atmosphere
H. sun
I. convection
J. tilts
Answer:
E. OZONE
Explanation:
Of more importance to us, ultraviolet photons have enough energy to damage or destroy DNA, visible and infrared photons do not. When we absorb visible or infrared photons the energy carried by the photon goes into heating us up, but will not permanently damage our cells like ultraviolet photons can.
answer is E. Ozone
What is the solubility of potassium chloride in 20 g of water at 80 C?
In 20 g of water at 80 C, potassium chloride dissolves with a solubility of 0.25. One or more solutes combined uniformly in a solvent form a solution. Solubility is the quality that enables molecules to dissolve.
Consequently, "solubility" can be described as a substance quality. The metal halide salt potassium chloride (KCl, often known as potassium salt) is made up of both potassium and chlorine. It has a vitreous crystal look and is odourless or colourless. The potassium chloride easily dissolves in water, and the flavour of its solutions is similar to salt. An old dried lake is a source of potassium chloride. A homogeneous mixture is a sort of mixture in which all of its constituent parts are present in the same amounts inside the sample.
20/80 = 0.25
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Calculate the specific heat capacity for a 13.7-g sample of nickel that absorbs 361 j when its temperature increases from 28.4 °c to 87.8 °c.
The specific heat capacity for a 13.7g sample of nickel that absorbs 361 j when its temperature increases from 28.4 °c to 87.8 °c is 0.443.
The relation between specific heat capacity, mass of sample and change in temperature.
Q = m × C×T
Given
Heat given to sample = Q = 361J
Mass of sample = m = 13.7g
Initial temperature = 28.4 °c
Final temperature = 87.8 °c
Change in the temperature = 59.4 c
361J = 13.7g x C x 59.4
C = 0.443
Hence, specific heat capacity for a 13.7g sample of nickel is 0.443.
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The mineral takes up 2.0 mL of
space in the graduated cylinder.
What is the volume of the
mineral piece in cubic
centimeters?
volume = [?] cm³
The volume of the mineral piece in cubic centimeters (cm³), given that it takes 2.0 mL of space in graduated cylinder is 2.0 cm³
How do I determine the volume of themineral piece in cm³?To obtain the volume of the mineral piece in cubic centimeters (cm³), we must convert 2.0 mL to cubic centimeters (cm³).
This can be obtained as illustrated below:
Volume (in mL) = 2.0 mLVolume (in cm³) =?We can convert 2.0 mL to 2.0 cm³ as shown below:
From conversion scale identity,
1.0 mL = 1.0 cm³
Therefore,
2.0 mL = 2.0 cm³
From the above illustration, we can conclude that the volume (in cm³) is 2.0 cm³
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What are some ways each person could reduce air pollution?
Some ways each person could reduce air pollution is using the public transport , recycle and reuse , no to the plastic bags, planting the more trees, using environment friendly vehicle.
There are several ways to reduce the air pollution :
1) by using the public transport or the ecofriendly transport like cycle. the use of public transport is the easy way to contribute to the less air pollution.
2) recycle and reuse reduces the air pollution. the recycle products are take less power to make the products.
3) no to plastic bags : as we all know the plastic products are very harmful to environment.
4) planting more trees : this method is also a very easy method that ever can contribute to the less air pollution. plants gives us oxygen or fresh air.
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Help, please!
How would you compare the mass of two objects without using a scale?
Balance scale is another method of comparing the mass of objects in the absence of a scale.
What is a balance scale?A balance is a type of measurement device used to compare the weight or mass of an object by balancing them against the standard weights of known objects. It has two pans and a balanced beam. The beam is in balance when the pans have the same mass.
To determine the weight of an object, place it in one pan and standard weights in the other. Balances can be made be made locally with available tools like hangers and bags in place of pans and wood to be balanced on.
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at a constant temperature, a sample of a gas in a balloon that originally had a volume of 7.6 l and pressure of 661 torr has a change of pressure to 728 torr. calculate the new volume in liters.
The new volume of the balloon, of pressure 728 torr is 6.9 L.
What is volume?Volume is the measure of the capacity that an object holds.
To calculate the volume of the balloon, we use the formula below.
Formula:
V = P'V'/P.................. Equation 1Where:
V = Final volume of the balloonP = Final pressure of the balloonP' = Initial pressure of the balloonV' = Initial volume of the balloonFrom the question,
Given:
P' = 661 torrP = 728 torrV' = 7.6 LSubstitute these values into equation 1
V = (661×7.6)/728V = 6.9 LHence, the new volume of the balloon is 6.9 L.
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PLEASE HELP ASAP:Two objects are placed a certain distance from each other. The amount of gravitational force between the two objects depends on their masses and the distance between them. As the masses of the objects decrease, the force of gravity between them _____________. As the distance between the objects decreases, the force of gravity between them ______________.
Given the reactant side of the total ionic equation for the neutralization reaction of sodium hydroxide ( NaOH ) with hydrochloric acid ( HCl ), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the product species, separated by the reaction arrow.
Na+(aq)+OH−(aq)+H+(aq)+Cl−(aq)→ ?
Be sure to include the charges on the ionic species and the physical state of all the reactant and product species.
Na⁺(aq)+OH⁻(aq)+H⁺(aq)+Cl⁻(aq)→ Na⁺(aq) + Cl⁻ (aq) + H⁺ (aq) + OH⁻ (aq) is the total ionic reaction.
What is reaction?The reaction is a process that leads to the chemical transformation of one chemical substance to another.
Just to help to understand what is happening here, here the complete non-ionic reaction is shown
equation for the neutralization reaction of sodium hydroxide ( NaOH ) with hydrochloric acid ( HCl ), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the product species, separated by the reaction arrow.
NaOH (aq) + HCl (aq) → NaCl (aq) + H₂O
Now, you have to separate the ionic substances into the ions, which gives the desired answer:
Na⁺(aq)+OH⁻(aq)+H⁺(aq)+Cl⁻(aq)→ Na⁺(aq) + Cl⁻ (aq) + H⁺ (aq) + OH⁻(aq)
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A ample of ga at 20ºC ha a volume of 10 L and exert a preure of 912 mm Hg. How many mole
of ga are in the ample?
a. 0. 3 mol c. 0. 8 mol
b. 0. 5 mol d. 1. 00 mol
The Number of moles present is 0.5mol.
What is ideal gas law?
The general gas equation, also known as the ideal gas law, is the equation of state for a fictitious ideal gas. The equation for the ideal gas's relationship to pressure P, volume V, temperature T, and number of moles n is known as the ideal gas law.
Use P V = n R T
R = 0.08206 L -atm /mol -K when the pressure is in atmosphere atm, the volume is in litres L, and the temperature is in Kelvin K.
One atm is equal to 760.0 mm Hg, so depending on how the pressure changes, there will either be a division or multiplication.
Divide the value in mmHg by 760.0 mmHg/atm to convert it to atm.
P= 912mmHg /760mmHg/atm=1.2atm
to convert °C to kelvin,
K=°C +273= 20+273=293K
R=0.08206
Add these values to given equation,
n=PV/RT
= 1.2×10÷0.08206×293
= 12÷24.02
=0.5mol
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Potassium metal reacts hydrochloric acid to produce hydrogen gas and potassium chloride. If 3. 0 moles of potassium reacts to form 2. 0 moles of potassium chloride, how many moles of hydrogen gas are produced?.
The moles of hydrogen gas produced is 2.0 moles that can be determined using stoichiometry ratios.
The response among potassium and hydrochloric acid is over very quick. The potassium at once ignites on touch with the acid, generating a vivid lilac flame that quick grows till the potassium burns up.
The chemical reaction can be depicted as follows:
2K(s)+2HCl(aq)→KCl2(aq)+H2(g)
The moles of potassium are 3.0 moles.
The moles of potassium chloride are 2.0 moles.
According to the stoichiometry of the reaction, two moles of potassium react with two moles of hydrochloric acid to produce two moles of potassium chloride and one mole of hydrogen gas.
Thus, the moles of hydrogen gas produced is 2.0 moles.
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12.7 l of argon at 33°c and 735 torr are dissolved in enough water to give a final volume of 0.750 l. what is the molarity of the resulting solution?
The molarity of the resulting solution is 0.65 M.
Which molarity is it?To be able to comprehend what we mean by the molarity of a solution, we must first go back in time. We are aware that molarity refers to the concentration of the component in the solution. In this situation, it's important to be aware that the molarity can only be represented in terms of moles per litre.The number of moles of the gas must now be determined, and this can only be done by applying the ideal gas equation, which is what we will be able to accomplish in this issue.PV = nRT
Pressure is P.
Volume is V.
The number of moles is n.
Gas constant R
Temperature is T
n = PV/RT
n = 0.97 * 12.7/0.082 * 306
n = 12.3/25.1
N=0.49 moles.
Number of Mole/Volume Equals Molarity of the Solution
0.49 moles/0.750 liters
= 0.65 M
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which formula represents an asymmetrical molecule
Answer:
Explanation:
An asymmetrical molecule is a molecule that has non-superimposable mirror images. In other words, the molecule cannot be superimposed on its own mirror image.
One way to represent an asymmetrical molecule is with the formula R-L, where R and L represent different groups attached to a central carbon atom. This formula indicates that the molecule has a chiral carbon, which is a carbon atom that is bonded to four different groups. Because the groups attached to the carbon atom are different, the molecule is asymmetrical.
Another way to represent an asymmetrical molecule is with the formula (R,R)-(S,S), where R and S represent different groups attached to a central carbon atom. This formula indicates that the molecule has two chiral carbons, each of which is bonded to two R groups and two S groups. Because the groups attached to the carbons are different, the molecule is asymmetrical.
Overall, the exact formula for an asymmetrical molecule will depend on the specific groups attached to the central carbon atom(s) and the arrangement of those groups.
the absolute temperature of a sample of monatomic ideal gas is doubled at constant volume. what effect, if any, does this have on the pressure and density of the sample of gas?
The absolute temperature of a sample of monatomic ideal gas is doubled at constant volume. The effect, if any, does this have on the pressure and density of the sample of gas is doubled and remains the same.
The ideal gas equation is given that :
P V = n R T
where,
P = Pressure
V = volume
n = no. of moles
R = gas constant
T = temperature
it is clear from the above equation that if we doubled the temperature of the gas the pressure of the gas is also doubled because they are directly proportional to each other. the density is given as :
density = mass / volume
it is clear that density is only depends on the mass and the volume so, it will remains the same.
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suggest a reason for why the addition of bromine to fumaric acid requires a high temperature while the other substrates tested reacted at room temperature?
Rising in temperature accelerates the formation of fumaric acid while decreasing the final yield. Thus, the addition of bromine to fumaric acid requires high temperature.
In the presence of a relatively small amount of bromate, maleic acid in aqueous sulfuric acid isomerizes catalytically to fumaric acid in the dark at room temperature. The concomitant presence of a suitable amount of bromine in CCI, phase raises the rate and yield significantly. The yield and rate of isomerization depend on the relative amounts of maleic acid, bromate, bromine, and sulfuric acid. For a favorable condition, nearly 90% yield can be obtained.
The presence of cumene or benzene inhibits the isomerization. Hypobromous acid is proposed to play a major role in catalyzing the isomerization. A mechanism is proposed to rationalize the experimental results.
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when the lobes of two p orbitals are in the same phase and overlap side-by-side, the orbital that is formed has a _____ dissociation energy compared to the σ∗ molecular orbital formed from the out-of-phase direct overlap of the two p orbitals.
The orbital that is created when the lobes of two p orbitals overlap side by side while being in phase with one another has a lower dissociation energy than the molecular orbital created when the two p orbitals are directly in phase with one another.
What do you call it when two atoms share electrons and overlap their electron shells to form a molecule?When two atoms share a pair of electrons, a covalent bond is created. The electron pair is drawn to both of the nuclei, which keeps the atoms together.
Exactly what kind of orbital overlap produces the strongest covalent bond?The strongest bond is produced by the head-on overlapping of 2p2p orbitals because the electron density is highest along the bond's axis.
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What is the percent yield of the reaction? Type in the answer using 3 significant figures.
Answer:
90.3%
Explanation:
calculate the number of milliters of 0.540 m ba(oh)2 required to precipitate as ni(oh)2 all of the ni2 ions in 166 ml of 0.531 m nibr2 solution.
the number of milliters of 0.540 m ba(oh)2 required is 97.80 ml
The given equation of reaction is
NiBr2(aq) + Ba(OH)2(aq) --> Ni(OH)2(s)+BaBr2(aq)
molarity of NiBr2 is 0.531 M
volume = 166 ml
Molarity of Ba(OH)2 = 0.54 M
let volume is V liters
According to the equation ,
1mole of NiBr2 requires --> 1moles of Ba(OH)2
0.531 * 0.166 = V * .540
v =[tex]\frac{0.531*0.166}{0.54}[/tex]
V = 97.80 ml
Molarity (also called molarity, bulk concentration, or substance concentration) is a measure of the concentration of a chemical species.
To find the molarity of a solution, divide the number of moles of solute by the total volume of the solution in liters.
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