Answer to Question #106585 in General Chemistry for Tay

Question

a sample oh hydrogen gas, H2(g), is placed in a 0.500L container at 295 K. The gas pressure is 1.442bar. how many moles of H2 gas are in the container

Answer 1

pV=nRT

T = 295 K

V = 0.5 L = 0.5*10^-3 m³

p = 1.442 bar = 144200 Pa

R = 8.314 J/mol*K

n = pV/RT = (144200*0.5*10^-3)/(8.314*295) = 0,029 mol.