Объяснение:
Ca3(PO4)2 ---> 2P
n(Ca3(PO4)2) = m/M = 8.75 / 310 = 0.0282 mol;
n(Ca3(PO4)2) = n(P) / 2
n(P) = 2*n(Ca3(PO4)2) = 2*0.0282 = 0.0564 mol
m(P) = n*M = 31*0.0564 = 1.7484 g
Объяснение:
Ca3(PO4)2 ---> 2P
n(Ca3(PO4)2) = m/M = 8.75 / 310 = 0.0282 mol;
n(Ca3(PO4)2) = n(P) / 2
n(P) = 2*n(Ca3(PO4)2) = 2*0.0282 = 0.0564 mol
m(P) = n*M = 31*0.0564 = 1.7484 g