How many molecules of HCl are needed to react with 1.7 moles of magnesium. The products of the reaction are magnesium chloride and hyd

Question

How many molecules of HCl are needed to react with 1.7 moles of magnesium. The products of
the reaction are magnesium chloride and hydrogen gas.
2HCl + Mg –> MgCl2 + H2
(pls help)

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Nick 7 months 2021-07-13T19:05:29+00:00 1 Answers 0 views 0

Answers ( )

  1. vankhanh
    0
    2021-07-13T19:06:30+00:00
    Reply

    Answer:

    2.05 x 10²⁴ molecules

    Explanation:

    The balanced equation for the chemical reaction is the following:

    2 HCl + Mg → MgCl₂ + H₂

    According to the equation, 2 moles of HCl are required to react with 1 mol of magnesium (Mg), so the moles of HCl required to react with 1.7 mol Mg are calculated as follows:

    moles HCl = 1.7 mol Mg x 2 mol HCl/mol Mg = 3.4 mol HCl

    We know that 1 mol of any compound is equal to 6.022 x 10²³ molecular entities, so we convert the moles of HCl to molecules as follows:

    molecules HCl = 3.4 mol HCl x 6.022 x 10²³ molecules/1 mol = 2.05 x 10²⁴ molecules

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