Question

a)Why is there no change in mass during chemical reactions?

b) copper sulphate react with sodium hydroxide to form a blue copper

hydroxide and sodium sulphate. In an experiment,15.95 g of copper sulphate

reacted with 8.0 g of sodium hydroxide to form 9.75 g copper hydroxide and

14.2 g sodium sulphate. Show this data verifies the law of conservation of mass​

Answer 1

Answer:

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Answer 2

Answer:

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