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20 October, 18:21

The chemical formula of propane is C3H8. Which number correctly uses scientific notation to represent the number of atoms in 2.00 moles of propane?

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  1. 20 October, 21:23
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    Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We do as follows:

    2.00 mol C3H8 (6.022 x 10^23 atoms / mole) = 1.204x10^24 atoms C3H8
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