Question

How many atoms are in 12.9 mol Au?

Group of answer choices

a. 7.77x1024 atoms

b. 2.14x10-23 atoms

c. 6.02x1023 atoms

d. 1.38x1023 atoms

Answer 1

amy what happen to your old account and the answer is c

Step-by-step explanation:

Answer 2

Given :

12.9 mol of Au.

To Find :

How many atoms are in 12.9 moles Au.

Solution :

We know, 1 mol of any element/molecules contains
`6.022* 10^(23)\ atoms/mol`.

Number of atoms in 12.9 moles of Au is :

`n = 12.9 * 6.022* 10^(23)\ atoms\\\\n = 7.77* 10^(24)\ atoms`

Therefore, number of atoms in 12.9 moles of Au is
`7.77* 10^(24)\ atoms`.

Hence, this is the required solution.