Question

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

Answer 1

118,438.5 moles

Step-by-step explanation:

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

`n = (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 * {10}^(28) }{6.02 * {10}^(23) } \\ = 118438.538...`

We have the final answer as

118,438.5 moles

Hope this helps you