document.write( "Question 948838: How much 20% HCI solution and 40% hci solution must be mixed together to make 400 millileters of 35% hci solution \n" ); document.write( "
Algebra.Com's Answer #579243 by stanbon(75887)\"\" \"About 
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How much 20% HCI solution and 40% hci solution must be mixed together to make 400 millileters of 35% hci solution
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\n" ); document.write( "Equation:
\n" ); document.write( "acid + acid = acid
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\n" ); document.write( "0.20x + 0.40(400-x) = 0.35*400
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\n" ); document.write( "20x + 40*400 - 40x = 35*400
\n" ); document.write( "-20x = -5*400
\n" ); document.write( "x = (1/4)400
\n" ); document.write( "x = 100 ml (amt. of 20% solution needed)
\n" ); document.write( "400-x = 300 ml (amt. of 40% solution needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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