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The density of 3M solution of NaCl is 1.25 g/mL. Calculate the molality of the soution.

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Two springs X and Y have spring constants k and 2k respectively.Spring X is stretched by a force F and spring Y is stretched by a force 2F. Each spring obeysHooke’s law during the extension.The work done in stretching spring X is WX and the work done in s...

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