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4 June, 00:11

What is the mass of 0.80 moles of Mg?

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Answers (2)
  1. 4 June, 00:14
    0
    You calculate the mass (m) by multiplying the molar mass (M) with the moles (n). Molar mass (M) is found in the the periodic table.

    m=n*M

    n=m/M

    M=m/n

    n=0.80moles

    M=24.3050 g/moles

    m=0.80moles*24.3050 g/moles = 19.444 g
  2. 4 June, 00:21
    0
    Here is the question with its answers:

    What is the mass of 0.80 moles of Mg?

    7.5 * 1023 grams

    4.8 * 1023 grams

    30 grams

    19 grams

    The correct answer is D) 19 grams
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