Question

How many mol of hydrogen in 2.8 mol of caffeine.

Answer 1

Empirical formula of caffeine is C₈H₁₀N₄O₂.

In 1 mol of caffeine we have 10 mol of hydrogen.
In 2,8 mol of caffeine we have x mol of hydrogen.

x = 2,8 mol * 10 mol / 1 mol = 28 mol

ANSWER: There are 28 mol of hydrogen.

:-) ;-)

Answer 2

Answer:

Empirical formula of caffeine is C₈H₁₀N₄O₂. In 1 mol of caffeine we have 10 mol of hydrogen. In 2,8 mol of caffeine we have x mol of hydrogen. ANSWER: There are 28 mol of hydrogen.