Question 280412
IF the total mix is 500ml then:
.10*100=500x
10=500x
500x=10
x=10/500
x=.02 or thre mix is 2% acid.
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IF you're adding 500ml of water then:
.10*100=(100+500)x
10=600x
600x=10
x=10/600
x=.0167 or 1.67% acid.