Concept explainers
Interpretation:
The mass of copper sulfide formed in the given reaction needs to be determined.
Concept introduction:
According to law of conservation of mass, total mass of reactant and product in a
Answer to Problem 54A
159 g.
Explanation of Solution
The mass of copper is 127 g and that of sulfur is 41 g. The mass of sulfur remains after the reaction (unreacted) is 9 g.
The reactants are copper and sulfur and product is copper (I) sulfide. According to law of conservation of mass, total mass of reactant is equal to the total mass of product. Also, there is sulfur remaining after the reaction thus, the amount of sulfur remaining will be added to the product side.
Putting the values,
Therefore, the mass of copper (I) sulfide formed is 159 g.
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Chemistry: Matter and Change
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