SOLUTION: A chemistry experiment requires a 30% solution of sodium chloride. I have 50 milliliters of 20% solution. How many milliliters of 50% solution should I add to obtain the required 3

Question 1133793: A chemistry experiment requires a 30% solution of sodium chloride. I have 50 milliliters of 20% solution. How many milliliters of 50% solution should I add to obtain the required 30% solution?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A chemistry experiment requires a 30% solution of sodium chloride. I have 50 milliliters of 20% solution. How many milliliters of 50% solution should I add to obtain the required 30% solution?
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Add M mls.
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50*20 + M*50*M = (50 + M)*30
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Stir vigorously to keep the undissolved salt uniformly mixed.
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