Molecular formula

The video explains the molecular composition of compounds, using caffeine as an example. It details the molecular formula of caffeine, C8H10N4O2, and breaks down the number of carbon, hydrogen, nitrogen, and oxygen atoms present in a caffeine molecule.

What is the purpose of a molecular formula in chemistry?

• To calculate the boiling point of a compound

• To show the number and type of atoms in a molecule

• To identify the taste of a compound

• To determine the physical state of a compound

Which of the following is a component of caffeine's molecular formula?

• C12H22O11

• C8H10N4O2

• NaCl

• H2O

How many carbon atoms are present in one molecule of caffeine?

• 8

• 6

• 10

• 12

What is the total number of hydrogen atoms in a caffeine molecule?

• 8

• 14

• 12

• 10

In the molecular formula of caffeine, how many nitrogen atoms are there?

• 2

• 3

• 5

• 4