Question

How many atoms are in 0.05 moles of xenon gas at STP?

2.2 x 10^23

3.0 x 10^22

6.0 x 10^23

3.0 x 10^24

Answer 1

To convert moles to atoms, multiply moles by Avogadro's number:
(0.05mol Xe)(6.02x10^23 atoms) = 3.0x10^22 atoms Xe

Answer 2

Answer: Option (b) is the correct answer.

Step-by-step explanation:

According to the mole concept there are
`6.022 * 10^(23)` atoms present in 1 mole of a substance.

Mathematically, 1 mole =
`6.022 * 10^(23)` atoms or molecules

Therefore, number of atoms present in 0.05 moles of xenon are as follows.

`0.05 * 6.022 * 10^(23)`

=
`0.3011 * 10^(23)` atoms

or, =
`3.0 * 10^(22)` atoms

Thus, we can conclude that there are
`3.0 * 10^(22)` atoms present in 0.05 moles of xenon gas at STP.