Question

se da:
m(P2 O3)=132g
n=(P2 O3)=?
AJUTATIMA VA ROG
se da:
n(Zn O)=0,3 mol
m(Zn O)-?

Answer 1

folosesti relatia   n,mol= m/M,  de unde    m,g= nxM
M,P2O3=110g/mol
n=132g/110g/mol=.........................calculeaza !!!!


M,ZnO=81g/mol
m=0,3molx81g/mol=.........................calculeaza !!!!