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Q.

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?

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a

2.70 M

b

1.50 M

c

1.344 M

answer is C.

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Detailed Solution

Molarity of the final mixture

M=Total milimoles of the soluteTotal volume

M=480×1.5+520×1.2480+520 M=1.344 M

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