Question

What is the number of moles of NaCl in 3 litres of 3 M solution

Answer 1

Molarity = No. of moles of solute/ Volume of solution

3 = n/3
n = 6moles

Answer 2

Molarity = No. of moles of solute
------------------------------------
Volume of solution
3 = n
--
3

n = 6 moles.
Hope it helps u dear.