Question

If you double temperature and decrease the volume by a factor of two, what happens to the pressure of the gas

Answer 1

Well, the gas law theory has the formula of PV=nRT in which
P = pressure
V = Volume
n = number of moles
R = ideal gas law constant
T - Temperature
When temperature is doubled, the pressure doubles
When the Volume decreases, the pressure increases

Answer 2

Another question: If you add more molecules to a container and want to maintain a constant pressure, name two ways you can go about to achieve this. I put "You have to decrease the temperature or increase the volume." is that right?

Answer 3

that's what i would do