Problem: Calculating the mass percentages of the elements in benzene after calculating the molecular weight of benzene.

FREE Expert Solution

We are asked to calculate for the percent by mass (mass %) of each element in benzene (C6H6) and to do that we’re going to use the mass percent formula shown below:


%Mass = mass of elementtotal mass×100


First, we need to get the atomic weights of each element in benzene using the periodic table and then calculate its molar mass.

Mass of C:

6 x 12.01 g/mol C = 72.06 g C

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Problem Details

Calculating the mass percentages of the elements in benzene after calculating the molecular weight of benzene.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. You can view video lessons to learn Mass Percent Formula. Or if you need more Mass Percent Formula practice, you can also practice Mass Percent Formula practice problems.