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A chemist mixes 90 milliliters of a solution that is 75% acid with 35 milliliters of pure acid.

Answer the questions below. Do not do any rounding.

(A) How many milliliters of of acid are in the resulting mixture?

(B)What percentage of the resulting mixture is acid?

Guest Oct 15, 2014

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In 90 ml that is 75% acid, the amount of acid is 90 ml x .75 = 67.5 ml of acid.

A) 67.5 ml + 35 ml = 102.5 ml.

B) The total amount in the mixture is 90 ml + 35 ml = 125 ml.

Of this, 102.5 ml is acid. To find the percentage: 102.5 / 125 = 82%.

geno3141 Oct 15, 2014

geno3141 · Answer 1 · 2014-10-15T03:07:32

In 90 ml that is 75% acid, the amount of acid is 90 ml x .75 = 67.5 ml of acid.

A) 67.5 ml + 35 ml = 102.5 ml.

B) The total amount in the mixture is 90 ml + 35 ml = 125 ml.

Of this, 102.5 ml is acid. To find the percentage: 102.5 / 125 = 82%.