Question

Câți moli de magneziu reprezintă 48 Mg?
a) 62g P
b) 4g H
c) 42g N

Urgent coroană!!!

Answer 1

1 mol Mg...24 g Mg
x ..................48 g Mg
x=48×1/24=2 moli Mg
a)
1 mol P.....31 g P
y................62 g P
y=62×1/31=2 moli P
b)
1 mol H......1 g H
Z.................4 g H
z=4×1/1=4 moli H
c)
1 mol.......14g
n...............42
n=42×1/14=3 moli N