A mole of oxygen O2 and a mole of phosphorus P4 do not contain the same number of molecules.Group of answer choicesTrueFalse

Final Answer

True

Explanation

A mole of any substance contains Avogadro's number of entities, which is approximately $6.022 \times 10^{23}$. However, when comparing a mole of $O_2$ (which consists of 2 oxygen atoms) and a mole of $P_4$ (which consists of 4 phosphorus atoms), we are comparing the number of molecules of each substance.

• A mole of $O_2$ contains $6.022 \times 10^{23}$ molecules of $O_2$.
• A mole of $P_4$ contains $6.022 \times 10^{23}$ molecules of $P_4$.

Thus, even though both contain the same number of moles (1 mole), the count of molecules is the same: both have $6.022 \times 10^{23}$ entities, as they represent whole molecules in their respective forms.

In this context, you can say:

• Number of $O_2$ molecules = $1 \text{ mole} = 6.022 \times 10^{23} \text{ molecules}$
• Number of $P_4$ molecules = $1 \text{ mole} = 6.022 \times 10^{23} \text{ molecules}$

Therefore, the statement that a mole of $O_2$ and a mole of $P_4$ do not contain the same number of molecules is True.