Question

How many miles of sodium chloride present in250ml of a 0.50M Nacl solution

Answer 1

Answer:

answer is 7.3125

Explanation:

given;

molarity=0.50 M back.

volume=0.25 l

to calculate;

mass of nacl in solution.

proof;

molarity= no.of moles \ volume of solution.

no.of moles=0.5 m *0.25 l.

no.of moles =0.125 moles.

we know that,no of moles = given mass\molecular mass.

molecular mass of nacl =23+35.5=58.5 g.

sub formula,

0.125 = given mass\58.5 g.

given mass =0.124*58.5.

given mass=7.3125.