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Calculate the mass (in grams) of a singl...

Calculate the mass (in grams) of a single `C-12` atom.

A

`1.993xx10^(-23)g`

B

`2.875xx10^(-23)g`

C

`4.162xx10^(-23)g`

D

`3.786xx10^(-23)g`

Text Solution

Verified by Experts

The correct Answer is:
A
1 mol of `C-12` atom weighs exactly `12g`. Thus, Mass of `C-12` atom
`= ("Molar Mass")/("Avogadro's constant") = (12g mol^(-1))/(6.022xx10^(23) "atoms mol"^(-1))`
`= 1.993xx10^(-23)g "atom"^(-1)`
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