Question

A sample of Vitamin C is known to contain $2.58\times {10}^{24}$ oxygen atoms. How many moles of oxygen atoms are present in the sample?

Answer 1

Step 1: Given data:

As, 1 mole of a substance = $6.022\times {10}^{23}$(Avogadro number)

No, of Oxygen atoms present in Vitamin C: $2.58\times {10}^{24}$

Step 2: To find the number of moles of Oxygen atom in the sample:

$\mathrm{The}\mathrm{number}\mathrm{of}\mathrm{moles}=\frac{\mathrm{Given}\mathrm{number}\mathrm{of}\mathrm{particles}}{\mathrm{Avogadro}\mathrm{Number}}$

$\mathrm{The}\mathrm{number}\mathrm{of}\mathrm{moles}\mathrm{of}\mathrm{Oxygen}\mathrm{atom}=\frac{2.58\times {10}^{24}}{6.022\times {10}^{23}}$

$\mathrm{n}=4.28\mathrm{mol}$

Therefore, $4.28\mathrm{moles}$ of the Oxygen atom are present in the sample.