V He = 112 л
n He, m He - ?
n He = V/Vm = 112/22,4 = 5 моль
m He = nM = 5*4 = 20 г
ответ : 5 моль, 20 г
V He = 112 л
n He, m He - ?
n He = V/Vm = 112/22,4 = 5 моль
m He = nM = 5*4 = 20 г
ответ : 5 моль, 20 г