Question

HURRYYY!!!! Convert 7.13 x 10^28 atoms of calcium (Ca) to moles of calcium.

Answer 1

Answer:

118,438.5 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

$n = \frac{7.13 \times {10}^{28} }{6.02 \times {10}^{23} } \\ = 118438.538...$

We have the final answer as

118,438.5 moles

Hope this helps you