Question

How many moles of helium are present in 104g of he?

Answer 1

Answer:

26

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Answer 2

Given:

104 grams of He.

To find:

The number of moles.

Solution:

To determine the number of moles we have to follow the below steps as follows-

He is an inert gas. It has filled 2s orbital. The atomic weight of the He atom is 4 grams.

Thus we can write-

4 grams of He occupy 1 mole.

Hence 104 grams of He occupy 104/4=26 moles.

26 moles of helium are present in 104g of He.