Question

How many moles is ( 1 x 10^9 ) molecules O2

Answer 1

Answer:

The answer is

$1.66 \times {10}^{ - 15} \: \: moles$

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

From the question we have

$n = \frac{1 \times {10}^{9} }{6.02 \times {10}^{23} }$

We have the final answer as

$1.66 \times {10}^{ - 15} \: \: moles$

Hope this helps you