Determine the percent composition of Lithium in Li3PO3 (lower case BOTH 3) Your answer: A. 20.866% B. 31.037%

Question

Determine the percent composition of Lithium in Li3PO3 (lower case BOTH 3)

Your answer:
A. 20.866%
B. 31.037%
C. 48.097%
D. 10.080%

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Khải Quang 6 months 2021-08-04T12:04:54+00:00 1 Answers 5 views 0

Answers ( )

    0
    2021-08-04T12:06:21+00:00

    Answer:

    A. 20.866%

    Explanation:

    First, we calculate molar mass of Li3PO3

    Molar mass of Li3PO3 = 6.9 (3) + 31 + 16(3)

    = 20.7 + 31 + 48

    = 99.7g/mol

    To calculate the percent composition of Lithium, we say:

    Mass of lithium in compound/mass of compound × 100

    % composition = 20.7/99.7 × 100

    = 0.208 × 100

    = 20.8%.

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