Question

Menthol, C10H200, is a compound often

used in creams for muscle aches.
If there are 2.25 x 10^-6 moles of oxygen in a sample, how many atoms of carbon are in the same sample?

Answer 1

2.25 x 10^-5 moles or 1.355 x 10^19 atoms

Step-by-step explanation:

Menthol has the chemical formula C10H20O, which means that for every 1 mole of oxygen (O) in a sample of menthol, there are 10 moles of carbon. So if there are 2.25 x 10^-6 moles of oxygen in a sample of menthol, then there are 10 * 2.25 x 10^-6 = 2.25 x 10^-5 moles of carbon in the same sample.

Since there are Avogadro’s number (6.022 x 10^23) atoms in one mole of any substance, there are 2.25 x 10^-5 moles * 6.022 x 10^23 atoms/mole = 1.355 x 10^19 atoms of carbon in the same sample.