Răspuns:
MMgCl2=24+2x35,5=95g/mol
MH2=2x1=2g/mol
MMg=24g/mol
m=nxM=6x24=144g
24g.................95g........2g
Mg + 2HCl → MgCl2 +H2↑
144g..............xg...............yg
x=144x95/24=calculeaza
y=144x2/24=calculeaza
calculam in moli:
1mol.................1mol........1mol
Mg + 2HCl → MgCl2 +H2↑
6moli...............zmoli.......tmoli
z=6x1/1=calculeaza
t=6x1/1=calculeaza
Explicație: