Chemistry
posted by Dee .
A 1.30L sample of argon gas is at 1.02 atm and 21.5 degrees Celsius. a. what mass of argon is in the container. b. If the temperature is raised to 500 degrees celsius while the volume remains constant, calculate the new pressure, in stmospheres.

PV=nRT
where
P= pressure in atm
V= volume in L
n =(mass of Ar)/(molar mass of Ar)
R=0.082058 L atm mol1 K1
T= temperature in Kelvins