A sample of H2 gas ( 12.28 g) occupies 100.0 L at 400 degree Kelvin and 2.00 atm. A sample weighing 9.49 gram would occupy how many L at 353 Kelvin and 2.00 atm?
Use the ideal gas law
PV = nRT
First find moles of H2 gas
n1 = (12.28g) / (2g/mol) ...
It applies ideal gas law to find the volume of H2.