дано
V(HNO3) = 150 cm3
p(HNO3) = 1.4 g/cm3
C(HNO3) =65 %
m(Cu)-?
m(HNO3) = V(HNO3) * p(HNO3) * C(HNO3) / 100% = 150 * 1.4 * 65% / 100%
m(HNO3) = 136 .5 g
Cu+4HNO3(k) = Cu(NO3)2+ 2NO2+2H2O
M(HNO3) = 63 g/mol
n(HNO3) = m/M = 136.5 / 63 = 2.17 mol
n(Cu) = 4 n(HNO3)
n(Cu) = 2.17 / 4 = 0.54 mol
M(Cu) = 64 g/mol
m(Cu) = n*M = 0.54 * 64 = 34,56 g
ответ 34.56 г
Объяснение:
ответ:дано
Подробнее - на -
дано
V(HNO3) = 150 cm3
p(HNO3) = 1.4 g/cm3
C(HNO3) =65 %
m(Cu)-?
m(HNO3) = V(HNO3) * p(HNO3) * C(HNO3) / 100% = 150 * 1.4 * 65% / 100%
m(HNO3) = 136 .5 g
Cu+4HNO3(k) = Cu(NO3)2+ 2NO2+2H2O
M(HNO3) = 63 g/mol
n(HNO3) = m/M = 136.5 / 63 = 2.17 mol
n(Cu) = 4 n(HNO3)
n(Cu) = 2.17 / 4 = 0.54 mol
M(Cu) = 64 g/mol
m(Cu) = n*M = 0.54 * 64 = 34,56 g
ответ 34.56 г
Объяснение:
ответ:дано
V(HNO3) = 150 cm3
p(HNO3) = 1.4 g/cm3
C(HNO3) =65 %
m(Cu)-?
m(HNO3) = V(HNO3) * p(HNO3) * C(HNO3) / 100% = 150 * 1.4 * 65% / 100%
m(HNO3) = 136 .5 g
Cu+4HNO3(k) = Cu(NO3)2+ 2NO2+2H2O
M(HNO3) = 63 g/mol
n(HNO3) = m/M = 136.5 / 63 = 2.17 mol
n(Cu) = 4 n(HNO3)
n(Cu) = 2.17 / 4 = 0.54 mol
M(Cu) = 64 g/mol
m(Cu) = n*M = 0.54 * 64 = 34,56 g
ответ 34.56 г
Подробнее - на -
Объяснение: