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6 November, 17:18

What is the molarity of 10.0 g of NaCl dissolved in water to make 100. mL?

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  1. 6 November, 17:27
    0
    = 1.7 M

    Explanation:

    Molecular mass of NaCl = (23+35.5) = 58.5g

    58.5g of NaCl are weighed by 1 mole of NaCl

    10.0g of NaCl will be weighed by (10:58.5)

    = 0.17 moles of NaCl

    100mL = (100:1000) L = 0.1L

    0.1L of a solution is occupied by 0.17 moles of NaCl

    1L of solution will be occupied by [ (1:0.1) * 0.17]

    =1.7 M
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