GasesCharles's Law76Choose the best answerA gas occupies 300 mL at 37°C. What volume will it occupy at −3°C at constant pressure?A261 mLB270 mLC300 mLD350 mL Like 0 Discuss 0Share
GasesFree Expansion of an Ideal Gas77Choose the best answerAn ideal gas undergoes free expansion into a vacuum. Its temperature does not decrease because ideal-gas molecules:AAre always above the inversion temperatureBHave no intermolecular attractive forcesCLose kinetic energy during collisionsDPerform maximum external work Like 0 Discuss 0Share
GasesMolar Mass from Ideal Gas Equation78Choose the best answerWhich relations can be used to determine the molar mass M of an ideal gas?AM = mRT/PVBM = PV/mRTCM = dRT/PDBoth A and C Like 0 Discuss 0Share
GasesPressure–Temperature Relationship79Choose the best answerAt constant volume, gas pressure increases with temperature mainly because:AAverage molecular speed increasesBIntermolecular attraction increasesCMolecular mass increasesDContainer volume decreases Like 0 Discuss 0Share
GasesAverage Kinetic Energy of Gases80Choose the best answerAt the same absolute temperature, molecules of different ideal gases have:AThe same average translational kinetic energyBThe same average speedCThe same momentumDThe same root mean square speed Like 0 Discuss 0Share