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Calculating Percent composition

Quiz by Erica Thomas

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4 questions
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  • Q1
    Find the percent compositions (rounded to the nearest tenth of a percent) of all of the elements in the following compounds:
    Question Image
    Cr: 52.3% F:47.7%
    Cr: 89.1% F: 10.9%
    Cr: 47.7% F:52.3%
    Cr: 10.9% F: 89.1%
    120s
  • Q2
    Find the percent compositions (rounded to the nearest tenth of a percent) of all of the elements in the following compounds:
    Question Image
    Na:18.9% P 39.0% O: 42.1%
    Na:42.1 % P:18.9% O:39.0%
    Na: 39.0% P: 42.1% O:18.9%
    Na:42.1 % P: 39.0% O18.9%
    120s
  • Q3
    Find the percent compositions (rounded to the nearest tenth of a percent) of all of the elements in the following compounds:
    Question Image
    P: 90.5% I: 9.5%
    P: 7.5% I:92.5 %
    P: 75% I:25%
    P: 92.5% I: 7.5%
    120s
  • Q4
    Find the percent compositions (rounded to the nearest tenth of a percent) of all of the elements in the following compounds:
    Question Image
    K: 60.5% C:18.0% N: 21.5%
    K: 61.5% C:17.5% N: 21.0%
    K: 60.5% C:18.5% N: 22.0%
    K: 60.0% C:18.5% N: 21.5%
    120s

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