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5 moles of carbon atoms in one container and 5 moles of sodium atoms kept in another container, which of the following is heavier?

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Container having Carbon atoms is heavier

Container having Sodium atoms is heavier

Both containers have the same weight

None of the containers has weight

answer is B.

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Detailed Solution

5 moles of carbon atoms in one container and 5 moles of sodium atoms kept in another container, a container having sodium atoms is heavier.
Carbon is a p block element and sodium is an s block element.
Atomic mass of carbon is

12 amu

and the atomic mass of sodium is

23 amu

.
Therefore,

5

moles of carbon atoms

= (5 \times 12) = 60 g

And,

5

moles of sodium atoms

= (5 \times 23) = 115 g

Thus, a container having

5

moles of sodium atoms are heavier.

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