Question

Find the mass of 6.023 x 1022 molecules of O2​

Answer 1

Answer:

You have asked the question wrongly but I have found the answer

Explanation:

6.022*10^23 is the Avogadro number, which equals 1 mole. So you are basically asking how much a mole of oxygen weighs…

Oxygen molecule’s mass is 32, since oxygen atom’s atomic mass is 16. (16*2)

A mole of hydrogen atoms is 1g, and the atomic mass of hydrogen is 1.

So the mass ration of the mole oxygen molecule and the mole hydrogen atom is 32:1, which means a mole of oxygen molecules weighs 32g in total.

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Answer 2

From the given question the correct answer is:

Solution :

Molecular weight of Oxygen (O2) = 32

It means that 32 grams of O2 have Avogadro number of molecules.

If 32 g of O2 is having 6.023 x 10^23 molecules, then ? g of O2 has 6.023 x 10^22 molecules.

32 g of O2 = 6.023 x 10^23

? g of O2 = 6.023 x 10^22

By doing cross multiplication, we get,

= 32 x 6.023 x 10^22/6.023 x 10^23

= 32/20 = 3.2

So, 3.2 g of O2 contains 6.023 x 10^22 oxygen molecules.