How many molecules of hydrogen gas was produced if 5.0 moles of lead was consumed?

Question

How many molecules of hydrogen gas was produced if
5.0 moles of lead was consumed?

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Kim Cúc 6 months 2021-08-11T13:59:42+00:00 1 Answers 4 views 0

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    2021-08-11T14:01:18+00:00

    Answer:

    3.01×10²⁴ molecules of H₂

    Explanation:

    Reaction that can produce hydrogen gas from Pb can be this:

    Pb + H₂S →  PbS + H₂

    1 mol of Pb can react to 1 mol of H₂S to produce 1 mol of PbS and 1 mol of H₂

    Ratio is always 1:1.

    In conclussion 5 moles of lead will produce 5 moles of H₂.

    Let’s apply the NA to count molecules

    1 mol contains 6.02×10²³

    Then, 5 moles must contain (5 . 6.02×10²³) = 3.01×10²⁴ molecules

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