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6 November, 20:26

What mass of oxygen forms from 71.89 g CO2? Use the periodic table to find molar masses.

71.89 g CO2 =

g O2

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Answers (1)
  1. 6 November, 20:29
    0
    Atomic mass C = 12.0107

    Atomic mass O = 15.9994

    Calculate the molecular mass of the CO2

    12.0107 + (2 x 15.9994) = 44.0095

    Multiply the mass of CO2 by the conversion factor that relate the O mass to the molecular mass of CO2 to find the mass of O in the 71.89g of CO2

    71.89 g CO2 x (2 x 15.9994) / 44.0095 =

    52.2703900748702

    52.27 g O
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