please help ME WITH CHEM I DONT HAVE ENOUGH TIME! calculate the number of hydrogen molecules that it would have contained at stp if it had a

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please help ME WITH CHEM I DONT HAVE ENOUGH TIME! calculate the number of hydrogen molecules that it would have contained at stp if it had a volume of 200,00m cubed.​

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Tài Đức 3 years 2021-08-12T11:10:11+00:00 1 Answers 2 views 0

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    2021-08-12T11:12:10+00:00

    We know that, at STP, one mole of a gas occupies 22.4 L of volume

    we’ll use the same principle to solve this problem

    Converting given volume to Liters:

    We know that 1 m³ = 1000 L

    So, 20000 m³ = (20000)*(1000) L = 2 * 10⁷ L

    Converting Liters to moles:

    As mentioned above, at STP, one mole occupies 22.4 Liters

    Number of moles in 2 * 10⁷ L = 2 * 10⁷ / 22.4

    Number of moles = 8.9 * 10⁵ moles

    Converting moles to number of particles:

    We know that 1 mole contains 6.022 * 10²³ molecules

    So, 8.9 * 10⁵ moles contain [(8.9 * 10⁵) * (6.022 * 10²³)] molecules

    Number of molecules = 53.6 * 10²⁸ molecules

    In proper scientific notation:

    Number of molecules = 5.36 * 10²⁹ molecules

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