Question 959171
Jennifer needs to make a solution that is 20% hydrochloric acid. If she must use all of the 25 mL of 40% hydrochloric acid she started with, then how much water needs to be mixed with the original solution?
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let x=amt of water to mix
40%*25=20%(25+x)
10=5+.20x
.20x=5
x=25
 how much water needs to be mixed? 25 mL