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16 March, 09:54

If 6.5 L of water is added to 4.5 L of a 2.8 M Ca (OH) 2 solution, what is the molarity of the new solution?

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  1. 16 March, 11:36
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    Find moles of Ca (OH) 2 first:

    moles = 2.8 x 4.5 = 12.6

    Now,

    After addition, new volume = 6.5 + 4.5 = 11.0

    So, new molarity = 12.6 / 11 = 1.145
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