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AP Chemistry· difficulty 4/5

What is the molarity of 25.0 g of NaOH dissolved in 500. mL solution? (M(NaOH) = 40.0 g/mol)

  • A

    1.25 M

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  • B

    2.50 M

  • C

    0.500 M

  • D

    0.625 M

Explanation

Moles = 25.0/40.0 = 0.625 mol. Molarity = 0.625/0.500 L = 1.25 M.

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