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

Answer

B

Explanation

Total molarity`=(M_(1)V_(1)+M_(2)V_(2))/(V_(1)+V_(2))`
`=(1.5xx480+1.2xx520)/(480+520)`
`=1.344M`