Problem: A compound with a molar mass of about 28 g/mol contains 85.7% carbon and 14.3% hydrogen by mass. Write the Lewis structure for a molecule of the compound.

FREE Expert Solution

(1) The atomic masses are 12.01 g/mol C, and 1.01 g/mol H. Assuming each % as mass:


85.17 g C×1 mol C12.01 g C=7.136 mol C


14.3 g H×1 mol H1.01 g H=14.158 mol H 




(2): Divide the number of moles of each by the smallest value:

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Problem Details

A compound with a molar mass of about 28 g/mol contains 85.7% carbon and 14.3% hydrogen by mass. Write the Lewis structure for a molecule of the compound.

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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 Lewis Dot Structures: Neutral Compounds concept. You can view video lessons to learn Lewis Dot Structures: Neutral Compounds. Or if you need more Lewis Dot Structures: Neutral Compounds practice, you can also practice Lewis Dot Structures: Neutral Compounds practice problems.

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Based on our data, we think this problem is relevant for Professor Barth's class at OREGONSTATE.

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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.