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If one mole of carbon atoms …

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If one mole of carbon atoms weighs 12 grams , what is the mass (in grams) of 1 atom of carbon?

Posted by Santosh Patel Patel 2 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 2 years, 11 months ago

We have given that one mole of carbon atom weighs 12 g.
A mole is defined as exactly equal to 6.022 × 10²³ atoms.
So, we know that a mole of carbon contains 6.022 × 10²³ atoms.
Therefore, we can write the mass of 6.022 × 10²³ atoms = 12 g.
Using the unitary method to find the mass of 1 atom of carbon in grams. So, we can write as below-
So, now mass of 1 atom of carbon will be =12 / (6.022 × 10²³) = 1.993 × 10⁻²³ g
Hence, the mass in grams of 1 atom of carbon is 1.993 × 10⁻²³g.
If we have to find the mass of 2 atoms or n number of carbon atoms, the same way we can proceed to find the mass in grams of the carbon atoms.

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