Question

A sample of Vitamin C is known to contain 2.58 ×10²⁴ oxygen atoms. How many moles of oxygen atoms are present in the sample?

Answer 1

One mole of a substance is equal to the substance’s 6,022 x 10²³ units. The 6.022 x 10²³ number is known as the number of Avogadro or the constant of Avogadro.

We know,

1 mole = 6.022 x 10²³

The number of moles = Given the number of particles / Avogadro Number

• Given the number of particles = 2.58×10²⁴
• Avogadro Number = 6.022×10²³

n = 2.58×10²⁴ /6.022×10²³

n = 4.28 mole.

Moles of oxygen atoms present in the sample are 4.28 moles.