Question

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

• A. 2.28 moles
• B. 2.14 moles
• C. 1 moles
• D. 4.28 moles

Answer 1

The correct option is D 4.28 moles

$6.023\times {10}^{23}$ atoms = $1$ mole of oxygen atoms

$\therefore$ Number of moles of oxygen atoms in $2.58\times {10}^{24}$ atoms $=\frac{2.58\times {10}^{24}}{6.023\times {10}^{23}}=4.28mol$

$\therefore 4.28$ moles of oxygen atoms are present in the sample.

Hence, the correct answer is option $D$.