Question

If you have a 10 solution of nacl what is its molar concentration

Answer 1

If you mean 10% mass / Volume then :  

m.wt = mass (g)/mol , 1/m.wt = mol/mass (g)  

1.m.wt (mol/g) *10/100 g/ml * 1000 ml/L =  

1/58.44 * 0.1 * 1000 = 1.71 M(mol/L)

hope this works out !!!!