mickablack09 16/06/2016 resposta: 0,5 mol/LNaOHNa = 23 g/molO = 16 g/molH = 1 g/molTotal = 40 g/mol2g 100 mlxg 1000 mlx = 20 g/LSe:1 mol 40 gx mol 20 g/Lx = 20/40x = 0,5 mol/L
mickablack09
resposta: 0,5 mol/L
NaOH
Na = 23 g/mol
O = 16 g/mol
H = 1 g/mol
Total = 40 g/mol
2g 100 ml
xg 1000 ml
x = 20 g/L
Se:
1 mol 40 g
x mol 20 g/L
x = 20/40
x = 0,5 mol/L