Question

Quantos mols correspondem a 710 gramas de Na₂SO₄?
5 mols
11,63 mols
3 mols
2 mols​

Answer 1

Na2SO4=(2 . 22)+(1 . 32)+(4 . 16) = 44+ 32+ 64=140g/mol


Dados.
M=140g/mol. n=m:M
n=?? n=710g:140g/mol
m=710g. n=5mol