Question

How many moles of calcium is 4.88 multiply by 10^23 atoms of calcium

Answer 1

The answer is 0.81 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{4.88 * {10}^(23) }{6.02 * {10}^(23) } = (4.88)/(6.02) \\ = 0.810631229...`

We have the final answer as

0.81 moles

Hope this helps you