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(Solved): A chemist mixes \( 43.4 \mathrm{~g} \) of benzene with \( 31.6 \mathrm{~g} \) of 2-ethyltoluene and ...
A chemist mixes \( 43.4 \mathrm{~g} \) of benzene with \( 31.6 \mathrm{~g} \) of 2-ethyltoluene and \( 20.8 \mathrm{~g} \) of 4-methyl-2-pentanone. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits.