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Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight. 

(a) Whose container is heavier? 

(b) Whose container has more number of atoms?

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(a) Mass of sodium atoms carried by Krish = (5 × 23) g = 115 g While mass of carbon atom carried by Raunak = (5 ×12) g = 60g Thus, Krish’s container is heavy 

(b) Both the bags have same number of atoms as they have same number of moles of atoms

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