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Certain samples are given below. 200g ...

Certain samples are given below.
`200g H_2`
`200g He`
`200g Ca`
Arrange them in the increasing order of number of molecules.
(Hint Atomic mass of H = 1, He = 4, Ca = 40)

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The correct Answer is:
`200g Ca<200gHe<200g H2`
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