Answers

2015-02-28T19:15:23+05:30
Accrording to law of conservation of mass , mass of reactants should be equal to mass of products. To equal the mass of solution andwater , we need to take 5% of salt to prepare 5% of solution.
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2015-03-01T18:46:42+05:30
This is because of reactants is equal 2 mass of products
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