Question

A sample of vitamin C is known to contain 2.409 x 1024 oxygen
atoms. How many moles of oxygen atoms are present in the
sample?​

Answer 1

Answer:

Explanation:

the law of definite proportion, sometimes called Proust's law, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.

Answer 2

The moles of Oxygen present in the sample = 4 moles

Explanation:

Given:

A sample of Vitamin C contains $2.049\times 10^{24}$ atoms

To find out:

Moles of Oxygen atoms present in the sample

Solution:

From Avogadro's principle

We know that in one mole of substance the number of atoms present $=6.023\times 10^{23}$

Thus,

$6.023\times 10^{23}$ atoms are present in = 1 mole

$\therefore$ 1 atom is present in = $\frac{1}{6.023\times 10^{23}}$ moles

$\therefore$ 2.049\times 10^{24} atoms are present in

= $\frac{2.049\times 10^{24}}{6.023\times 10^{23}}$ moles

= $4$ moles

Hope this answer is helpful.

Know More:

Q: A sample of Vitamin C is known to contain 2.58×10^24 oxygen atoms. How many moles of O2 are present in the sample.

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