What is the molarity of a solution that has 5.000 grams of NaOH dissolved to make 700.0 mL of solution? Na= 22.99 g/mol O= 16.00

Question

What is the molarity of a solution that has 5.000 grams of NaOH dissolved to make 700.0 mL of solution?
Na= 22.99 g/mol
O= 16.00 g/mol
H= 1.01 g/mol

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Thiên Di 5 years 2021-08-18T04:55:17+00:00 1 Answers 16 views 0

Answers ( )

  1. Acacia
    0
    2021-08-18T04:57:16+00:00
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    Answer:

    0.178 M

    Explanation:

    First we determine the molar mass of NaOH, using the given molar masses of the elements:

    • Molar Mass of NaOH = Molar Mass of Na + Molar Mass of O + Molar Mass of H
    • Molar Mass of NaOH = 40 g/mol

    Then we convert 5.000 grams of NaOH into moles, using its molar mass:

    • 5.000 g ÷ 40 g/mol = 0.125 mol

    Now we convert 700.0 mL into L:

    • 700.0 mL / 1000 = 0.700 L

    Finally we calculate the molarity of the solution:

    • Molarity = moles / liters
    • 0.125 mol / 0.700 L = 0.178 M

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