Question

A gas cylinder contains exactly 15 moles of oxygen gas (O2). How many molecules of oxygen are in the cylinder?

4.01 × 1022 molecules

6.02 × 1023 molecules

9.03 × 1024 molecules

2.89 × 1026 molecules

Answer 1

answer in picture its B 6.02 x 1023 molecules

Step-by-step explanation:

Answer 2

Answer: Option (c) is the correct answer.

Explanation:

According to Avogadro, there are
`6.022 * 10^(23)` atoms per molecule in one mole of a substance.

Therefore, in 15 moles of oxygen gas calculate the molecules of oxygen as follows.

`6.022 * 10^(23) * 15`

=
`90.33 * 10^(23)` molecules

=
`9.03 * 10^(24)` molecules

Thus, we can conclude that there are
`9.03 * 10^(24)` molecules in 15 moles.