Kouger8881 Kouger8881

20-02-2024
Chemistry

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Equal masses of iron (Fe) and sulphur (S) are heated together to form FeS. What fraction of the original mass of excess reactant is left unreacted? (Atomic mass of Fe=56, S=32)
a. 1/4
b. 1/3
c. 1/2
d. 2/3

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