<PRE><B>Question 718157</B>
A chemist, has one 30 litre bottle of 15% hydrochloric acid and one 30 litre bottle of 90% hydrochloric acid.
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He mixes 20 litres of 60% hydrochloric acid and then pours 5 L of that solution into the bottle containing the 90% hydrochloric acid. How strong is the acid in that bottle now?
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Equation:
acid + acid = acid
0.60*5 + 0.90*30 = x(35)
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3 + 27 = x(35)
x = 30/35
x = 86%
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Cheers,
Stan H.
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