Question

Determination raportul de masa pt subst
a hidroxid de magneziu
B acid azotic
C carbonate de sodium
Rapid va rog
Dau funda

Answer 1

Mg(OH)2

raport de masa=r.m.=AMg:2AO:2AH=24:2.16:2=24:32:2=12:16:1
                                                   se simplifica cu 2


HNO3

r.m.=AH:AN:3AO=1:14:3.16=1:14:48


Na2CO3

r.m=ANa:AC:3AO=2.23:12:3.16=46:12:48=23:6:24
                                                  ( se simplif. cu 2)