document.write( "Question 290381: a chemist mixes 12 L of a solution that is 45% acid with 8 L of a solution that is 70% acid. What is the percent of acid of the mixture? \n" ); document.write( "
Algebra.Com's Answer #726945 by amalm06(224)\"\" \"About 
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In this question, you are increasing the amount (concentration) of acid. The final concentration should be between 45% and 70%.\r
\n" ); document.write( "\n" ); document.write( "x=[(70-45)/45]x100=55% (Answer)
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