What is the root mean velocity for water vapor at 300.0∘C ? Use −273.15∘C for absolute zero. Use R = 8.314 kg⋅m2 s2 mol⋅K For the ideal gas constant. Your answer should have four significant figures. Provide your answer below: m/s
What is the root mean square velocity for the molecules of a sample of oxygen gas (O2) at 20.0∘CUse R = 8.314 kg⋅m2 s2 mol⋅K for the ideal gas constant. Your answer should have three significant figures. Provide your answer below: m/s
What is the pressure of 1.00 mole of propane gas at 660. K if the volume is 0.522 L ? Your answer should have three significant figures. Use R = 0.08206 L atm mol K For propane: a = 9.39 L2 atm mol2 and b = 0.0905 L mol Provide your answer below: atm
What is the real gas pressure exerted by 1.00 mol of O2 at 300. K in 2.41 L if the ideal pressure is 10.0 atm ? (a = 1.360 L2 atm mol2 and b = 0.0318 L mol). Your answer should have three significant figures. Provide your answer below: atm
The ideal pressure of 0.30 mol of He in 0.20 L is 30.55 atm at −25∘C. What is the real gas pressure? (a = 0.0341 L2 atm mol2 and b = 0.0237 L mol)Your answer should have two significant figures. Provide your answer below: atm
A 5.00 L flask contains 2.19 mol H2O at 298∘C. Calculate the pressure of this sample of H2O from the ideal gas law and from the van der Waals equation. For H2O, a = 5.46 L2 atm/mol2 and b = 0.0305 L/mol. Select the correct answer below: Ideal: 20.5 atm; van der Waals: 19.8 atm Ideal: 31.6 atm; van der Waals: 30.9 atm Ideal: 16.2 atm; van der Waals: 15.7 atm Ideal: 19.2 atm; van der Waals: 18.8 atm
Mean free path increases with: Select all that apply: increasing temperature decreasing temperature increasing pressure decreasing pressure
Which is an example of diffusion? Select the correct answer below: a tire slowly deflating an aroma from the kitchen being detected in the living room detecting an odor from food sealed in a plastic bag none of the above
Which factor(s) will affect the rate of diffusion of a gas? (select all that apply) Select all that apply: the identity of the gas the volume of the container the velocity of the particles Temperature
What is effusion? Select the correct answer below: the process of molecules dispersing in space in response to differences in concentration the escape of gas molecules through a tiny hole the amount of gas passing through some area per unit of time none of the above
Which of the following is a postulate of the kinetic molecular theory? Select the correct answer below: there is no attraction between gas particles or between the particles and the walls of the container there is a substantial amount of attraction between gas particles and the walls of the container there is no attraction between particles but there is force of attraction between particles and the container's walls all of the above
Which of the following is NOT a postulate or assumption of the kinetic molecular theory? Select the correct answer below: pressure exerted by a gas in a container results from collisions between the gas molecules and the container walls molecules composing the gas are negligibly small compared to the distances between them gas molecules exert no attractive or repulsive forces on each other or the container walls all of the above are postulates
Which noble gas will have the narrowest curve for distribution of molecular velocity? Select the correct answer below: He Ne Ar Kr
What is the root mean square velocity in meters per second for a nitrogen molecule (N2) at 50.0∘C ? Your answer should have three significant figures. Provide your answer below: m/s
In order to increase the volume of a sample of gas, one can: Select the correct answer below: increase the temperature, keeping pressure constant increase the number of moles present, keeping temperature and pressure constant reduce the pressure, keeping temperature constant all of the above
Which of the following can be explained using kinetic molecular theory? Select all that apply: Boyle's Law Avogadro's Law Charles's Law Dalton's Law
Which of the following is NOT a postulate of the kinetic molecular theory of gases? Select the correct answer below: Gases are composed of molecules that are in constant random motion. The average kinetic energy of gas molecules is proportional to the pressure of the gas. The molecules composing the gas are negligibly small compared to the distances between them Gas molecules exert no attractive or repulsive forces on each other or the container walls; therefore, their collisions are elastic
Use the image provided to determine which gas law the kinetic molecular theory is explaining. Select the correct answer below: Amonton's Law Boyle's Law Avogadro's Law Charles's Law
Use the image provided to determine which gas law the kinetic molecular theory is explaining. Select the correct answer below: Amonton's Law Boyle's Law Avogadro's Law Charles's Law
When moderately compressed, gas molecules have attraction for one another. Select the correct answer below: a small amount of a large amount of no none of the above
Which of the following can be added to correct the pressure term in the ideal gas law? Select the correct answer below: ab n2 nb n2a V2 none of the above
Low pressure High pressure At which of the following will the gas exhibit ideal behavior? Select the correct answer below: high pressure both high and low pressure low pressure none of the above
Which of the following terms is the correction for the volume of a real gas in the van der Waals equation? Select the correct answer below: ab n2 nb n2a V2 none of the above
Low pressure High pressure At which of the following will the gas exhibit non-ideal behavior? high pressure both high and low pressure low pressure none of the above
Gases deviate from ideal gas behavior more at Select the correct answer below: low pressures and high volumes high pressures and high temperatures low pressures and high temperatures high pressures and low temperatures
The attractive forces between gas particles will serve to: Select the correct answer below: reduce the volume increase the volume reduce the pressure increase the pressure
Which of the following is more significant at high pressures and small volumes? Select the correct answer below: a term to account for the volume of gas molecules a term to account for the attractive forces between gas molecules both A and B neither A or B
At lower pressures, which corrective term is more relevant? Select the correct answer below: a b they are equally relevant neither are relevant
We will give preference to the ideal gas law for making calculations when: Select the correct answer below: pressure is low volume is low temperature is low all of the above
is the movement of a gas through another gas. Select the correct answer below: Discharge Diffusion Effusion Efflux
Calculate the root mean square speed for a sample of neon gas (Ne) at 298 K. Your answer should have three significant figures. Use R = 8.314 J/(K mol). Provide your answer below: m/s
How does kinetic molecular theory explain Dalton's law? Select the correct answer below: Gas particles collide with the container with the same frequency regardless of whether other gases are present. Gas particles are different sizes and do not contribute equally to the overall pressure, based on size. Gas particles contribute to the overall pressure based on their molar masses. Gas particles have inelastic collisions, based on their individual identity.
How does kinetic molecular theory explain gas pressure inside a balloon? Select the correct answer below: Gas particles are large and only a few fit inside a balloon, inflating the walls. The atmospheric pressure is greater than the pressure of the gas inside the balloon, so the balloon expands Gas particles are very small, and many will fill the inside of the balloon until they are all stationary and touching each other. The pressure exerted by a gas in the balloon results from collisions between the gas molecules and the balloon walls.
Why do gases deviate from ideal behavior at high pressure? Select the correct answer below: The particle volume becomes significant. The particles have no attraction for one another. The particle collisions become elastic. The particles stop moving completely.
Which correction term is most important at high pressures? (P + n2a V2) × (V − nb) = nRT Select the correct answer below: a b R T
A 2.498M solution contains 245 g of H2SO4. What is the volume of the solution? Select the correct answer below: 2.89 L 0.426 L 1.00 L 3.41 L
25 g KBr is dissolved into 750 mL. What is the molar concentration of the solution? Report your answer with the correct number of significant figures. Provide your answer below: M
A 0.70 M solution contains 3.0 g of potassium chlorate (KClO3). What is the volume of the solution? Select the correct answer below: 0.023 L 0.038 L 0.045 L 0.035 L
What is the molarity of a 2.4 L solution with 1.2 moles of nitric acid (HNO3)? Your answer should have two significant figures (round your answer to two decimal places). Do not include units in your response. Provide your answer below:
156 g C12H22O11 (sucrose) is dissolved into 4.0 L of solution. What is the molar concentration of the solution? Report your answer with the correct number of significant figures. Provide your answer below: M
21.0 g of barium carbonate (BaCO3) is dissolved in a 800.0 mL solution. What is the molarity of the resulting solution? Report your answer with three significant figures. Provide your answer below: M
How many moles of Cu(NO3)2 are in 2.35 L of a 2.0 M solution? Report your answer with two significant figures. Provide your answer below: mol
A 0.5 M solution contains 0.1 mol of AgCl. What is the volume of the solution? Select the correct answer below: 0.2 L 0.6 L 0.3 L 0.5 L
What is the molarity of a solution if there is 28.0 g of NaCl per liter? Select the correct answer below: 0.479 M 0.386 M 0.529 M There is not enough information to answer this question.
What is the mass of Ag3N present in 1 L of a 0.6 M solution? Select the correct answer below: 202.57 g 235.18 g 285.35 g 301.67 g
A KCl sample of 93.2 g is dissolved in water to generate a 0.50 M solution. What is the volume of this solution? Select the correct answer below: 8.6 L 2.5 L 6.3 L 1.4 L
What is the mass in grams, of SnCl2 in solution given that the volume is 100 mL and the concentration is 0.500 M? Your answer should have three significant figures. Provide your answer below: g
What is the molarity of a 0.40 L solution with 6.2 g KCl? Your answer should have two significant figures. Provide your answer below: M
28 g of NaCl is dissolved in water to generate a 0.479 M solution. What is the volume of the solution, in liters? Your answer should have two significant figures. Provide your answer below: L
What is the molarity of a 0.30 L solution with 43 g H2SO4 ? Select the correct answer below: 0.8 M 1.1 M 1.5 M 1.7 M
A 1.00 L solution with 400. g SnCl2 has a concentration in molarity of: Your answer should include three significant figures. Provide your answer below: M
A solution has a concentration of 10.0 M and contains 5.0 g NH3. What is the volume (in milliliters) of this solution Provide your answer below: mL
12 g MgO is dissolved in water to generate a solution with a concentration of 0.31 M. What is the volume of this solution? Your answer should have two significant figures. Provide your answer below: L
What is the mass of NaOH present in grams, given that a 100.0 mL solution has a concentration of 0.125 M ? Your answer should have three significant figures. Provide your answer below: g
What is the mass of NaOH present in a solution given that the molarity is 1.2 M and the volume of the solution is 250 mL ? Your answer should have two significant figures. Provide your answer below: g
A 12 M solution of KNO3 has a volume of 0.50 L. If the solution is diluted to 4.0 L, what is the new concentration? Your answer should have two significant figures. Provide your answer below: M
What is the concentration in ppm if 33 g NaOH is dissolved into 401 mL(401 g) of water? When reporting your answer in scientific notation, use the multiplication symbol, ×, not the letter x. Your answer should have two significant figures. Provide your answer below: ppm