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1 February, 07:40

An 18.5 g sample of tin (molar mass = 118.7) combines with

10.0 g sulfur (molar mass = 32.07) to form a compound. What

is the empirical formula of this compound?

(A) SnS

(B) Sns2

(C) Sn2s

(D) Sn2s3

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Answers (1)
  1. 1 February, 09:35
    0
    Option (B) SnS2

    Explanation:

    Data obtained from the question include:

    Mass of Sn = 18.5 g

    Mass of S = 10 g

    The empirical formula of the compound can be obtained by doing the following:

    Step 1:

    Divide each element by their molar mass

    Sn = 18.5 / 118.7 = 0.156

    S = 10 / 32.07 = 0.312

    Step 2:

    Divide each by the smallest number

    Sn = 0.156/0.156 = 1

    S = 0.312/0.156 = 2

    The empirical formula is SnS2
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