Question

28. A given sample of phosphorus contains 0.25 mol of
phosphorus molecules (P.). The number of moles of
phosphorus atoms, number of phosphorus molecules
and number of phosphorus atoms present in the given
sample are respectively
A. 6.023 x 102, 1 and 3.2 x 10” .
B. 4, 3.2 x 10” and 6.023 x 1024
c. 1, 1.5 x 10” and 6.023 x 1023
D. 6.023 * 10.3.2 10% and 2​

Answer 1

The number of phosphorus molecules are $1.5055\times 10^{23}$ and number of phosphorus atoms are $6.022\times 10^{23}$

Explanation:

We are given:

Moles of $P_4$ = 0.25 moles

1 mole of $P_4$ contains 4 moles of phosphorus atoms

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}`$ number of particles

So, 0.25 moles of $P_4$ contains = $(0.25\times 6.022\times 10^{23})=1.5055\times 10^{23}$ number of molecules.

And, 0.25 moles of $P_4$ contains = $(4\times 0.25\times 6.022\times 10^{23})=6.022\times 10^{23}$ number of phosphorus atoms.

Number of phosphorus molecules = $1.5055\times 10^{23}$

Number of phosphorus atoms = $6.022\times 10^{23}$

Learn more about mole concept:

https://brainly.in/question/6018515

https://brainly.com/question/1383900

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