HOW MUCH WATER SHOULD BE ADDED TO 15g of salt to obtain 15% salt solution?
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HOW MUCH WATER SHOULD BE ADDED TO 15g of salt to obtain 15% salt solution?
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Therefore, mass of salt in soln. =15g
Hence ,
mass of water that must be added=100-15=85g
Is the answer correct?
Answer:
Explanation:
The mass by mass percentage of a solution is given by the following relation
where mass of solution = mass of solute + mass of solution
Let the mass of water be a grams.
So,
15 = [15 / (15 + a)] X 100
Solving for a, we get
a = (100 - 15)g = 85g
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