Question

There are moles of Carbon if I have 2.25 x 1023 atoms of Carbon? A. 0.19 moles b. 5.38 moles c. 0.37 moles d. 2.67 moles

Answer 1

c. 0.37 moles

Step-by-step explanation:

To find the number of moles (n) in a certain number of atoms of a substance, we divide the number of atoms by Avogadro number (nA), which is 6.02 × 10²³ atoms.

That is,

n = number of atoms ÷ 6.02 × 10²³

According to this question, there are 2.25 x 10²³ atoms of carbon (C). The number of moles contained in this carbon is as follows:

n = 2.25 x 10²³ ÷ 6.02 × 10²³

n = 2.25/6.02 × 10 (23 - 23)

n = 0.374 × 1

n = 0.374moles