Question

A sample of Vitamin C is known to contain 2.58 × 10 to the power 24 oxygen atoms.How many moles of oxygen atoms are present in the sample?

Answer 1

4.28 oxygen atoms are present in the sample

Answer 2

Answer:

6.023 x 1023 atoms of oxygen = 1 mole oxygen atom

therefore 2.58 x 1024 atoms of oxygen = 2.58 x 1024 /6.023 x 1023 = 25.8 x 1023/ 6.023 x 1023 = 4.28 moles of oxygen atom