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examination
started: nov 23 at 9:31pm
quiz instructions
the fifth exam. this is an examination on the material
in the gases chapter of the text.
question 24 4 pts
if a piston like container holding a mole of
gas has gas removed, the volume of the
container decreases, therefore the volume
is
equal to amount of gas
inversely related to amount of gas
directly related to amount of gas
less than amount of gas

Explanation:

To solve this, we recall gas laws (like Avogadro's principle) which state that at constant temperature and pressure, the volume of a gas is directly proportional to the amount (moles) of gas. When gas is removed (amount decreases), volume decreases. So volume and amount of gas have a direct relationship.

• "Equal to amount of gas" is incorrect as volume and amount (in moles) have a proportionality, not equality.
• "Inversely related" is wrong because a decrease in amount leads to a decrease in volume (direct, not inverse).
• "Less than amount of gas" is incorrect as volume and amount (moles) are different physical quantities (volume is in L, amount in moles) and can't be compared as "less than" in that sense.

Answer:

C. directly related to amount of gas