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A student has two solution of a substance. Solution-1: 25M, 400mL and Solution-2: 30M, 300M. What is the molarity of the final solutions if these two

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A student has two solution of a substance. Solution-1: 25M, 400mL and Solution-2: 30M, 300M. What is the molarity of the final solutions if these two solutions are mixed?

(a) 27.14

(b) 22.14

(c) 14.22

(d) 14.27
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The correct answer is (a) 27.14

Best explanation: M = (M1V1 + M2V2 )/(V1 + V2).
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