document.write( "Question 893132: How many milliliters of pure acid must be added to 150 milliliters of a 30% acid solution to obtain a 40% acid solution
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Algebra.Com's Answer #541086 by stanbon(75887)\"\" \"About 
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How many milliliters of pure acid must be added to 150 milliliters of a 30% acid solution to obtain a 40% acid solution
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\n" ); document.write( "Equation:
\n" ); document.write( "acid + acid = acid
\n" ); document.write( "0.30*150 + 1*x = 0.40(150+x)
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\n" ); document.write( "30*150 + 100x = 40*150 + 40x
\n" ); document.write( "60x = 10*150
\n" ); document.write( "x = (1/6)150
\n" ); document.write( "x = 25 mm (amt of pure acid needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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