Question

in the reaction between copper Sulphate and sodium sulphide solution when 15.9g copper sulphate reacts with 7.8g of sodium sulphide, 9.5g of copper sulphide is formed. what mass of sodium sulphate solution is formed?

Answer 1

According to the law of conservation of mass :
The total mass of products is equal to total mass of reactants.

so,
total mass of copper sulphate and sodium sulphide is equal to total mass of sodium sulphide and copper sulpide.
15.9+7.8 equal 9.5 + copper sulphide
Copper sulphide is equal to
(15.9+7.8)-9.5
equal to 14.2 g

Answer 2

Answer:

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