Respostas

2014-04-29T21:19:51-03:00
Massa molar NaCl 58g/mol
Logo,
1 mol NaCl ----- 58g
x              ----- 11,7g
x=0,20 mol

Molaridade= mol/L
M=0,20/2
M=0,1 molar
1 1 1
Obriigado beeh tavaa dificiil dee acahar rsrs :*