Question

How many moles of oxygen are there in 1.20 * 10^22 oxygen molecules

Answer 1

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Here is u r Ans ➡


✨1 mole = 6.022 × 10 ^23 molecules

1.2 × 10 ^22 molecules = 1 × 1.2 × 10 ^22 molecules / 6.022 × 10.23 molecules = 0.019 moles .

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Answer 2

0.0199 moles of oxygen are there in oxygen molecules.

Step-by-step explanation:

Given : $1.20\times 10^{22}$  oxygen molecules.

To find : How many moles of oxygen are there in oxygen molecules?

Solution :

We know that,

1 mole = $6.022\times 10^{23}$ molecules

1 molecule = $\frac{1}{6.022\times 10^{23}}$ mole.

Applying unitary method,

$1.20\times 10^{22}$ molecules = $\frac{1.20\times 10^{22}}{6.022\times 10^{23}}$ mole.

$1.20\times 10^{22}$ molecules = $0.0199$ mole.

Therefore, 0.0199 moles of oxygen are there in oxygen molecules.

#Learn more

Unitary method

https://brainly.in/question/1124080, Answered by Naveed1234