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Q.

If 1 mole of carbon atom weighs 12 g, what is the mass(g) of 1 atom of carbon?

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a

1.993 x 10-23 g

b

 1.854 x 1023 g

c

 1.967 x 10-23 g

d

 1.793 x 1023 g

answer is A.

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Detailed Solution

detailed_solution_thumbnail

Given, mass of 1 mole of carbon atom = 12 g

We know that 1 mole of carbon = 6.022 x 1023 atoms

Therefore, mass of 6.022 x 1023 atoms = 12 g

Hence,

Mass of 1 atom = 126.022×1023

= 1.993 x 10-23 g

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