дано
m(C3H8) = 4.2 g
V(CO2) - ?
C3H8+5O2-->3CO2+4H2O
M(C3H8) = 44 g/mol
n(C3H8) = m/M = 4.2 / 44 = 0.1 mol
n(C3H8) = 3n(CO2)
n(CO2) = 3*0.1 = 0.3 mol
V(CO2)= n*Vm = 0.3*22.4 = 6.72 L
ответ 6.72 л
Объяснение:
