A cylinder with a moveable piston contains $0\mathrm{.}87$mol of gas and has a volume of $334mL.$ What will its volume be if an additional $0\mathrm{.}22$mol of gas is added to the cylinder? $($Hint: The final number of moles is the sum of the initial number and the amount added.$)$

A bag of potato chips contains $585mL$ of air at $25C$ and a pressure of $765mmHg.$ Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is $442mmHg$ and the temperature is $5\mathrm{.}0C?$

What is the temperature of $0\mathrm{.}52$mol of gas at a pressure of $1\mathrm{.}3$atm and a volume of $11\mathrm{.}8$