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Number of atoms of He in 100 atoms of He...

Number of atoms of `He` in `100` atoms of `He` (at.mass 4 amu) is

A

`100xx6.022xx10^(23)`

B

`50`

C

`25`

D

`100`

Text Solution

Verified by Experts

The correct Answer is:
C
Nuimber of `He` atoms
`= ("Number of atomic mass units")/("Atomic mass of" He)`
`= (100 amu)/(4 "amu atom"^(-1)) = 25 He` atoms
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