Question

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

Answer 1

There is a change in your question. It is 0.50 M of nacl solution. 'm' stands for molality but the question states it to be molarity which is represented as 'M'. M = number of moles / volume of soln. In litresTherefore0.50 = no. of moles / 0.25 litresNo. of moles = 0.1250 moles.