What is the percent composition of a compound that contains 6.0 g of carbon and 1.0 g of hydrogen?

Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.

Let's look at two examples

The molar mass of #H_2O# is 18 g/mol The hydrogens make up 2g (since each mole of hydrogen is 1g)

The oxygen makes up 16g.

• Class-11-science»Chemistry

• Some Basic Concepts of Chemistry

Dear Student, mass of C present in compound = 6g mass of H present in compound = 1g total mass = 7g % composition of C = 6/7 = 85.7% = 86% % composition of H = 1/7 = 14.2%= 14%

(A) is correct

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