A laboratory technician needs to make a 40 -liter batch of a 40 % acid solution. How can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 20 % to get the desired concentration?

Question

Quinten

Mathematics

16 September, 02:41

A laboratory technician needs to make a 40 -liter batch of a 40 % acid solution. How can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 20 % to get the desired concentration?

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Answers (1)

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Jessie Hanson · Answer 1

Not sure how to explain

40*0.40=0.2 (40-x) + 1x

16=8-0.2x+x

minus 8 both sides

8=0.8x

divide both sides by 0.8

10=x

40-10=30

10liters of the pure and 30 liters of the 20%