A sample of oxygen gas has a volume of 2.1 L at 3.6 atm pressure and 200 K temperature.

What would the volume of this sample be at 1.0 atm and 400 K?

I need help.

2 answers

Thanks for helping...
PV/T is constant, so you want V such that
1.0*V/400 = 3.6*2.1/200