Question

Calculate the molarity of 7.8 moles of MgCl2 in 3.6 L of solution. Report your answer with 3

decimal places

Answer 1

The molarity of the solution is: 2,167 M.

Step-by-step explanation:

Molarity is a concentration measure that expresses the moles of solute per liter of solution. In this case it is calculated with the simple rule of three:

3,6 L solution ------- 7,8 moles of MgCl2

1 L solution -----------x= (1 L solution x 7,8 moles of MgCl2)/3,6 L solution

x=2,167 moles of MgCl2 ---> The solution is 2, 167 M