Question

What is the mass of 0.2 mole of oxygen atoms.
Please answer step by step.

Answer 1

Hey There!

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Answer:

`\huge\boxed{3.2 Grams}`

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Moles:

Moles is the unit which measures the amount of substance in the System International (SI). A mole is the amount of substance that contains the same amount of substance as the amount of substance exactly in exactly 12 g of carbon-12. C-12 is the standard to measure moles.

I have attached the Equations for moles.

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For this question we will use the formula,

`Moles = (Given Mass)/(Atomic Mass)`

Rearrange the equation,

`Mass = (Moles)x(Atomic Mass)`

Given:

Moles = 0.2

Molecular Mass of Oxygen Atom(Not molecule) = 16

Thus,

`Mass = (0.2)x(16)\\\\Mass = 3.2 grams`

The mass of 0.2 moles of oxygen atom is 3.2 grams.

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Best Regards,

'Borz'