Question

How many moles of silicon (Si) is 3.01 x 10²3 atoms?

a. 0.5 moles
b. 1 mole
c. 2 moles
d. 3 moles

Answer 1

To find the number of moles of silicon (Si) in 3.01 x 10²³ atoms, divide the number of atoms by Avogadro's number.

Step-by-step explanation:

To find the number of moles of silicon (Si) in 3.01 x 10²³ atoms, we can use Avogadro's number, which states that 1 mole of any substance contains 6.022 x 10²³ particles. Since there are 3.01 x 10²³ atoms of silicon, we divide this number by Avogadro's number to get:

3.01 x 10²³ atoms Si / 6.022 x 10²³ atoms/mol = 0.5 moles Si

Therefore, the correct answer is a. 0.5 moles.