Question

Raunak took 5 moles of carbon atom in a container and Krish also took 5 moles of sodium atom in another container of same weight.
(i) Which container is heavier.(ii) Whose container has more no. of atoms.

Answer 1

The container with sodium is heavier as it weighs 55g while other weighs 30g
Both have same no of atoms ie 5 moles or 3.011*10^24 atoms of each

Answer 2

Explanation:

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Number of moles of carbon in Raunak's container = 5 mol

Weight of 1 mol of carbon atoms = 12

Now , Weight of 5 moles of carbon atoms = 12 × 5 = 60 g

Number of moles of sodium in krish's container = 5 moles

Weight of 1 mol of Sodium = 23 g

Now , Weight of 5 moles of sodium = 23 × 5 = 115 g

By observing the above calculations . We can say that Krish's container is heavier compared to Raunak's container.

And Now ,Coming to the number of atoms ;

Product of number of moles of substance and avogadro number (6.023×10²³) gives the number of atoms in that substance.

The number of moles of both taken atoms is same. So , Number of atoms will also be same.

Hence ,

Krish's container is heavier compared to Raunak's container and Number of atoms present in both containers is same.