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23 September, 19:01

How many molecules of ch4 are in 48.2g of theis compound?

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  1. 23 September, 19:18
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    1 mol of any substance is made of 6.022 x 10²³ units. These units could be atoms making up elements or molecules making up compounds.

    methane is CH₄, 1 mol of CH₄ is made of 6.022 x 10²³ molecules of methane

    molar mass of CH₄ is 16 g/mol

    so 16 g of CH₄ is made of 6.022 x 10²³ CH₄ molecules

    therefore 48.2 g of this compound is made of - 6.022 x 10²³ / 16 x 48.2 = 1.81 x 10²⁴ molecules of methane

    there are 1.81 x 10²⁴ molecules of methane
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