A 1.31 mol sample of N2 gas is confined in a 31.0 liter container at 15.8 °C.?

Update: If the volume of the gas sample is decreased to 15.5 L holding the temperature constant, the average molecular speed will

decrease
not enough information to answer the question
remain the same
increase
Update 2: A 0.851 mol sample of Ar gas is confined in a 20.2 liter container at 16.4 °C.

If the volume of the gas sample is increased to 40.4 L holding the temperature constant, the average force per molecule-wall collision will

remain the same
increase
not enough information to answer the question
decrease
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