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11 October, 17:30

How many moles of aluminum are needed to make 9 moles of molecular hydrogen? Given the reaction: 2 Al + 6 HCl → 2 AlCl3 + 3H2

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  1. 11 October, 20:21
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    We need 6.0 moles of aluminium

    Explanation:

    Step 1: Data given

    Number of moles of H2 = 9.0 moles

    Step 2: The balanced equation

    2 Al + 6 HCl → 2 AlCl3 + 3H2

    Step 3: Calculate moles Al

    For 2 moles Aluminium, we need 6 moles HCl to produce 2 moles AlCl3 and 3 moles H2

    For 9.0 moles of H2 we need 2/3 * 9.0 = 6.0 moles of aluminium

    We need 6.0 moles of aluminium
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