Question

Cati atomi de oxigen se gasesc in 0,1 moli Mg3(PO4)2


Mase atomice:Mg=24 P=31 O=16

Answer 1

Mg 3( PO4)2

M=24.3+2.31+8.16=262

262 g ----------1mol Mg3(PO4)2

23

1mol Mg 3(PO4)2-----------8. 6,024 .10 atomi de O

0,1 moli-------------------------x

23

x=0,1. 8. 6,024 .10 atomi de O

Calculeaza!