Question

1.3 times 10^15 atoms of hydrogen converted to moles? How many moles?

Answer 1

Answer:

The answer is

$\huge 2.16 \times {10}^{ - 9} \: \: \: mol$

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

$n = \frac{1.3 \times {10}^{15} }{6.02 \times {10}^{23} } \\ = 2.159 \times {10}^{ - 9}$

We have the final answer as

$2.16 \times {10}^{ - 9} \: \: \: moles$

Hope this helps you