Two solutions of a substance (non-electrolyte) are mixed in the following manner , 480 mL of 1.5 M [first solution ] + 520 mL of 1.2 M [second solution ] . What is the molarity of the final mixture ?

Options

A. 1.20 M
B. 1.50 M
C. 1.344 M
D. 2.70 M

Answer

C

Explanation

`M_(mix)= ( M_(1)V_(1)+M_(2)+V_(2))/(V_(1)+V_(2))=( 720+624)/(1000)=1.344`