Question

How many moles are in 5.23x10²⁵ atoms of Au?

Answer 1

To determine the number of moles in 5.23x10²⁵ atoms of Au, we can use Avogadro's number as a conversion factor. The calculation gives approximately 8.68 moles of Au.

Step-by-step explanation:

To determine the number of moles in 5.23x10²⁵ atoms of Au, we can use Avogadro's number as a conversion factor. Avogadro's number is 6.022 × 10²³ atoms/mol. We can set up a ratio:

1 mol Au / (6.022 × 10²³ atoms Au) = x mol Au / (5.23x10²⁵ atoms Au)

Solving for x gives:

x = (5.23x10²⁵ atoms Au) / (6.022 × 10²³ atoms/mol)

= 8.68 mol

Therefore, there are approximately 8.68 moles of Au in 5.23x10²⁵ atoms of Au.