Question

Find the molecular formula of a hydrocarbo
containing 25% hydrogen​

Answer 1

Answer:

The compound is found to be composed of 75% carbon and 25% hydrogen.

100 g of the compound contains 75 g of carbon and 25 g of hydrogen.

The atomic masses of carbon and hydrogen are 12 g/mol and 1 g/mol respectively.

The number of moles of C

=

12 g/mol

75 g

=

6.25 moles

The number of moles of H

=

1 g/mol

25 g

=

25 moles

The mole ratio

C:

H=

6.25:

25=

1:

4

The empirical formula of the compound is

Explanation:

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