Ответ:
дано
m(Ca3(PO4)2) = 150 g
------------------------
m(H3PO4)-?
Ca3(PO4)2+3H2SO4-->2H3PO4+3CaSO4
M(Ca3(PO4)2) = 310 g/mol
n(Ca3(PO4)2) = m/M = 150 / 310 = 0.48 mol
n(Ca3(PO4)2) = 2n(H3PO4)
n(H3PO4) = 2*0.48 = 0.96 mol
M(H3PO4) = 98 g/mol
m(H3PO4) = 0.96* 98 = 94.08 g
ответ 94.08 г
Объяснение: