How many grams does f Cacl2 should be dissolved in 750.0 mL of water to make a 0.100 M solution Cacl2

Question

How many grams does f Cacl2 should be dissolved in 750.0 mL of water to make a 0.100 M solution Cacl2

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Tryphena 5 years 2021-07-23T07:11:42+00:00 1 Answers 15 views 0

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  1. haidang
    0
    2021-07-23T07:13:26+00:00
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    Answer:

    8.324 g

    Explanation:

    First we convert 750.0 mL into L:

    • 750.0 mL / 1000 = 0.750 L

    Then we calculate the required number of moles of CaCl₂, using the definition of molarity:

    • Molarity = moles / liters
    • Molarity * liters = moles
    • 0.100 M * 0.750 L = 0.075 mol

    Finally we convert 0.075 moles of CaCl₂ into grams, using its molar mass:

    • 0.075 mol * 110.98 g/mol = 8.324 g

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