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Eamcet Chemistry
1 st Year: Unit 1.1(Basics & Concepts) - Weights & Mole concepts

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Which of the following has highest mass?

A. One gram atom of Iron

B. 5 moles of N₂

C. 10²⁴ carbon atoms

D. 44.8 lit of He at STP

E. None of the above

View Answer

Correct choice: B

Explanation:

mass of One gram atom of Iron=56gm
mass of 5 moles of N₂ =5X28=140gm
mass of 10²⁴ carbon atoms=(12X 10²⁴ )/6X10²³=20gm
mass of 44.8 lit of He at STP=(4X44.8/22.4)=8gm

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Eamcet Chemistry 1 st Year: Unit 1.1(Basics & Concepts) - Weights & Mole concepts

Eamcet Chemistry
1 st Year: Unit 1.1(Basics & Concepts) - Weights & Mole concepts