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Molarity of the final mixture

Can someone please help me in getting through this problem. Two solutions of a substance (that is, non electrolyte) are mixed in the given manner 480 ml of 1.5M first solution + 520 ml of 1.2M second solution. Determine the molarity of the final mixture: (a) 1.20 M (b) 1.50 M (c) 1.344 M (d)2.70 M

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