дано
m(ppa BaCL2) = 104 g
W(BaCL2) = 2%
m(Na2SO4)-?
m(BaCL2) = 104 * 2% / 100% = 2.08 g
BaCL2+Na2SO4-->2NaCL+BaSO4
M(BaCL2) =208 g/mol
n(BaCL2) = m/M = 2.08 / 208 = 0.01 mol
n(BaCL2) = n(Na2SO4) = 0.01 mol
M(Na2SO4) = 112g
m(Na2SO4) = n*M = 0.01 *112 = 1.12 g
ответ 1.12 г
Объяснение:
дано
m(ppa BaCL2) = 104 g
W(BaCL2) = 2%
m(Na2SO4)-?
m(BaCL2) = 104 * 2% / 100% = 2.08 g
BaCL2+Na2SO4-->2NaCL+BaSO4
M(BaCL2) =208 g/mol
n(BaCL2) = m/M = 2.08 / 208 = 0.01 mol
n(BaCL2) = n(Na2SO4) = 0.01 mol
M(Na2SO4) = 112g
m(Na2SO4) = n*M = 0.01 *112 = 1.12 g
ответ 1.12 г
Объяснение: