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6 January, 15:25

A sample of C3H8 has 4.64 * 1024 H atoms. How many carbon atoms does the sample contain?

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Answers (2)
  1. 6 January, 17:17
    0
    In I molecule of C₃H₈, the ratio of Carbon to Hydrogen atoms = 3 : 8

    C: H = 3:8

    C : 4.64*10²⁴ = 3:8

    C / (4.64*10²⁴) = 3 / 8

    C = (3/8) * (4.64 * 10 ²⁴)

    C = 1.74 * 10²⁴

    The sample contains 1.74 * 10²⁴ C atoms.
  2. 6 January, 18:15
    0
    To calculate the number of carbon atoms in the sample of C3H8, the subscipts of the chemical formula is important since this gives the proportion of an element in a compound.

    4.64 * 10^24 H atoms (3 atoms C / 8 atoms H) = 1.74 x 10^24 atoms C
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