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Elena L [17]
3 years ago
8

Why one mole of hydrogen molecules and one mole of H-atoms have different masses?

Chemistry
1 answer:
NeX [460]3 years ago
3 0

Answer:

The number of grammes in a MOLE of any material is the same as the number of atomic mass units (amu). A mole of hydrogen atoms, on the other hand, has a mass of 1 gramme, while a mole of hydrogen molecules has a mass of 2 grammes. Remember that a hydrogen molecule is made up of two hydrogen atoms bound together.

Explanation:

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\color{red} = \frac{No.  \: of  \: bonding  \: electron  \: pairs}{No.  \: of  \: bonded \: atoms}

In  \: each  \: resonance  \: contributor, \\  there  \: are \:  six \: bonding  \: electron  \\ pairs \:  and  \: four  \: atoms  \: bonded  \\ to \:  the  \: SS  \: atom.  \: Thus,

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