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12 February, 13:11

Calculate the number of molecules in a sample of carbon dioxide with a mass of 168.2 grams

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  1. 12 February, 14:31
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    Answer: 2.30x10²⁴ molecules CO2

    Explanation: Solution:

    Convert mass of CO2 to moles

    Convert moles of CO2 to molecules using Avogadro's number.

    168.2 g CO2 x 1 mole CO2 / 44 g CO2 x 6.022 x10²³ molecules CO2 / 1 mole CO2

    = 2.30 x10²⁴ molecules CO2
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