How many moles of hydrogen are in 2.8 moles of caffeine

The moles of hydrogen in given moles of caffeine are 28 moles.

Explanation:

We are given:

Moles of caffeine = 2.8 moles

The chemical formula of caffeine is

In 1 mole of caffeine, 8 moles of carbon atoms, 10 moles of hydrogen atoms, 4 moles of nitrogen atoms and 2 moles of oxygen atoms are present.

So, in 2.8 moles of caffeine, moles of hydrogen atoms present will be moles

Hence, the moles of hydrogen in given moles of caffeine are 28 moles.