Answer to Question #139811 in General Chemistry for Harvey Jed A. Iman

Question

Calculate the molarity of a solution containing 2.40 g of sodium chloride (NaCl) and 40mL solution.

Answer 1

First calculate moles for NaCl

2.4÷58.44=0.04106moles

Note that this moles are contained in 40ml of the solution.

But Molarity is expressed per litre of solution, therefore

(1000÷40)×0.04106=1.026M