Question

How many moles of sodium chloride present in 250ml of a 0.50M nacl solution

Answer 1

M=no. of moles of NaCl/volume of sol. In litre.so,there are approx. 1.6 moles.

Answer 2

Answer: Moles of sodium chloride present is 0.125 moles.

Explanation: We are given :

Molarity = 0.5 M

Volume = 250mL

Number of moles can be calculated by using the formula:

$Molarity=\frac{\text{Number of moles}}{Volume\text{ (in mL)}}\times 1000$

Putting the values, in above equation, we get

$0.5=\frac{n}{250}\times 1000$

n = 0.125 moles