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27 August, 22:25

When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of Na?

Na (s) + H2O (g) yields NaOH (aq) + H2 (g)

1

2

3

4

+4
Answers (1)
  1. 27 August, 23:14
    0
    The unbalanced chemical reaction is

    Na (s) + H2O (g) yields NaOH (aq) + H2 (g)

    By inspection,

    There is 1 mole of Na in both sides

    There is 2 moles of H in the left and 3 moles in the right side.

    There is 1 mole of O in both sides

    We balance the reaction by:

    2Na (s) + 2H2O (g) yields 2NaOH (aq) + H2 (g)

    The answer is 2
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