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BITSAT2012ChemistrySome Basic Concepts of ChemistryActual

Number of atoms of He in 100 amu of He(atomic wt. of He is 4) are:

Options

  1. A25
  2. B100
  3. C50
  4. D100 6 10⁻²³

Correct answer

A. 25

Step-by-step solution

array l 100 amu of He = 100 4 atoms of He =25 atoms. array [1 a.m.u. = mass of one proton (approx.)]

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