Question

How many moles of tungsten atoms are in 4.8x10^23 atoms of tungsten?

A. 1.3 x 10^-1 moles

B. 8.0 x 10^2 moles

C. 1.3 x 10^-2 moles

D. 8.0 x 10^1 moles​

Answer 1

Answer: D. 8.0 x 10^-1 moles

Step-by-step explanation:

Answer 2

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{4.8 * {10}^(23) }{6.02 * {10}^(23) } = (4.8)/(6.02) \\ = 0.797342192 \\`

We have the final answer as

8.0 × 10-¹ moles

Hope this helps you