дано
m(Cu) = 11 g
m(O2) = 23 g
m(Cu2O) = ?
4Cu+O2-->2Cu2O
M(Cu) = 64 g/mol
n(Cu) = m/M = 11 / 64 = 0.17 mol
M(O2) = 16 g/mol
n(O2) = m / M = 23 / 64 = 0.4 mol
n(Cu) < n(O2)
4n(Cu) = 2n(Cu2O)
n(Cu2O) = 0.17 * 2 / 4 = 0.085 mol
M(Cu2O) = 144 g/mol
m(Cu2O) = n*M = 0.085 * 144 = 12.24 g
ответ 12.24 г
Объяснение:
дано
m(Cu) = 11 g
m(O2) = 23 g
m(Cu2O) = ?
4Cu+O2-->2Cu2O
M(Cu) = 64 g/mol
n(Cu) = m/M = 11 / 64 = 0.17 mol
M(O2) = 16 g/mol
n(O2) = m / M = 23 / 64 = 0.4 mol
n(Cu) < n(O2)
4n(Cu) = 2n(Cu2O)
n(Cu2O) = 0.17 * 2 / 4 = 0.085 mol
M(Cu2O) = 144 g/mol
m(Cu2O) = n*M = 0.085 * 144 = 12.24 g
ответ 12.24 г
Объяснение: