How many atoms of hydrogen are found in 8.1 mol of C9H20?

Answer 1

1 mole of a substance has approximately 6.02 x 10^23 its particles.

8.1 moles of C9H20 has 8.1 x 6.02 x 10^23 = 4.8762 x 10^24 C9H20 molecules

There are 20 Hydrogen atoms in a molecule of C9H20.

Number of hydrogen atoms = 4.8762 x 10^24 x 20 = 9.7524 x 10^25

There are about 9.75 x 10^25 Hydrogen atoms

Answer 2

In one molecule of C9H20, there are 20 atoms of hydrogen. So, in 8.1 moles of C9H20, there would be (8.1 \times 20 = 162) moles of hydrogen atoms.