Question

What amount of oxygen gas in moles contains 1.8x10^22 molecules?​

Answer 1

Answer:

0.03 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L}$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

$n = \frac{1.8 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.02990...$

We have the final answer as

0.03 moles

Hope this helps you