Clicker Questions Chapter 10 Barbara Mowery York College

Which of these is not a unit used to measure gas pressure? atmosphere Torr Pascal d. pound Answer: d

Which of these is not a unit used to measure gas pressure? atmosphere Torr Pascal d. pound Answer: d

Which of these is not a characteristic of gases? compressibility expansion to fill their containers formation of homogeneous mixtures d. All of these are characteristics of gases. Answer: d

Which of these is not a characteristic of gases? compressibility expansion to fill their containers formation of homogeneous mixtures d. All of these are characteristics of gases. Answer: d

Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s As a helium-filled balloon rises, its volume increases. This is an example of _______ Law. Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s Answer: b

Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s As a helium-filled balloon rises, its volume increases. This is an example of _______ Law. Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s Answer: b

Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s A balloon filled with hot air rises. This is an example of _______ Law. Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s Answer: c

Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s A balloon filled with hot air rises. This is an example of _______ Law. Avogadro’s Boyle’s Charles’s d. Gay-Lussac’s Answer: c

number of moles mass pressure d. temperature Avogadro’s Law states that the volume of a sample of a gas is proportional to the _______ of the gas. number of moles mass pressure d. temperature Answer: a

number of moles mass pressure d. temperature Avogadro’s Law states that the volume of a sample of a gas is proportional to the _______ of the gas. number of moles mass pressure d. temperature Answer: a

Standard temperature and pressure (STP) equals (X) atmosphere(s) and (Y) degrees Celsius. X = 0, Y = 25 X = 1, Y = 0 X = 1, Y = 25 d. X = 0, Y = 0 Answer: b

Standard temperature and pressure (STP) equals (X) atmosphere(s) and (Y) degrees Celsius. X = 0, Y = 25 X = 1, Y = 0 X = 1, Y = 25 d. X = 0, Y = 0 Answer: b

A sample of 2.0 moles of nitrogen (N2) gas at STP occupies a volume of _______ liters. 11.2 22.4 44.8 d. 89.6 Answer: c

A sample of 2.0 moles of nitrogen (N2) gas at STP occupies a volume of _______ liters. 11.2 22.4 44.8 d. 89.6 Answer: c

A sample of 4.0 grams of methane (CH4) gas at STP occupies a volume of _______ liters. 5.6 11.2 22.4 d. 44.8 Answer: a

A sample of 4.0 grams of methane (CH4) gas at STP occupies a volume of _______ liters. 5.6 11.2 22.4 d. 44.8 Answer: a

A gas sample with a mass of 88. 0 mg occupies 50 A gas sample with a mass of 88.0 mg occupies 50.0 mL at 750 Torr and 27 degrees Celsius. The gas is _______. CO CO2 SO2 d. SF6 Answer: b

A gas sample with a mass of 88. 0 mg occupies 50 A gas sample with a mass of 88.0 mg occupies 50.0 mL at 750 Torr and 27 degrees Celsius. The gas is _______. CO CO2 SO2 d. SF6 Answer: b

Which value of the gas constant has the units “J/mol-K?” 62.36 8.314 1.987 0.08206 Answer: d

Which value of the gas constant has the units “J/mol-K?” 62.36 8.314 1.987 0.08206 Answer: d

Combining the ideal-gas equation with the density formula demonstrates that as the molar mass of a gas ___, the density of the gas ___. increases; increases decreases; increases increases; decreases changes; changes in an unpredictable way. Answer: a

Combining the ideal-gas equation with the density formula demonstrates that as the molar mass of a gas ___, the density of the gas ___. increases; increases decreases; increases increases; decreases changes; changes in an unpredictable way. Answer: a

The partial pressure of each gas in a mixture of gases is proportional to the _______ of the gas. mass molecular weight square root of the molecular weight d. mole fraction Answer: d

The partial pressure of each gas in a mixture of gases is proportional to the _______ of the gas. mass molecular weight square root of the molecular weight d. mole fraction Answer: d

Kelvin temperature Celsius temperature number of moles d. pressure The kinetic-molecular theory of gases states that the average kinetic energy of the gas particles is proportional to the _______ of the gas. Kelvin temperature Celsius temperature number of moles d. pressure Answer: a

Kelvin temperature Celsius temperature number of moles d. pressure The kinetic-molecular theory of gases states that the average kinetic energy of the gas particles is proportional to the _______ of the gas. Kelvin temperature Celsius temperature number of moles d. pressure Answer: a

Neon gas undergoes effusion _______ krypton gas does. slower than at the same rate as twice as fast as d. four times as fast as Answer: c

Neon gas undergoes effusion _______ krypton gas does. slower than at the same rate as twice as fast as d. four times as fast as Answer: c

Water is decomposed by electrolysis and the products are collected separately. If 1 L of H2 is produced, ___ L of O2 will be produced. ½ 1 2 some other amount Answer: a

Water is decomposed by electrolysis and the products are collected separately. If 1 L of H2 is produced, ___ L of O2 will be produced. ½ 1 2 some other amount Answer: a

The mean free path is the total distance traveled by a gas molecule. the distance between two gas molecules. the distance between a gas molecule and the container wall. d. the average distance traveled between molecular collisions. Answer: d

The mean free path is the total distance traveled by a gas molecule. the distance between two gas molecules. the distance between a gas molecule and the container wall. d. the average distance traveled between molecular collisions. Answer: d

Which observation illustrates “average kinetic energy is proportional to absolute temperature”? Most gases will liquefy under intense pressure. Tire pressure is greater after a car has traveled some distance. A spray can feels cold to the touch after use. Gases expand to fill their container. Answer: b

Which observation illustrates “average kinetic energy is proportional to absolute temperature”? Most gases will liquefy under intense pressure. Tire pressure is greater after a car has traveled some distance. A spray can feels cold to the touch after use. Gases expand to fill their container. Answer: b

A gas is most likely to exhibit ideal behavior at (X) temperature and (Y) pressure. X = low, Y = low X = low, Y = high X = high, Y = low d. X = high, Y = high Answer: c

A gas is most likely to exhibit ideal behavior at (X) temperature and (Y) pressure. X = low, Y = low X = low, Y = high X = high, Y = low d. X = high, Y = high Answer: c

According to its van der Waals constants, which gas below best approximates ideal behavior? Ne Ar Kr d. Xe Answer: a

According to its van der Waals constants, which gas below best approximates ideal behavior? Ne Ar Kr d. Xe Answer: a

Which gas below has the smallest density at STP? Ar Kr Ne d. Xe Answer: c

Which gas below has the smallest density at STP? Ar Kr Ne d. Xe Answer: c