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BITSAT2022ChemistrySome Basic Concepts of ChemistryActual

A certain metal sulphide, M S₂ , is used extensively as a high temperature lubricant. If MS ₂ is 40.06 % by mass sulphur, metal M has atomic mass.

Options

  1. A160 u
  2. B64 u
  3. C40 u
  4. D96 u

Correct answer

D. 96 u

Step-by-step solution

M S₂=M+32 2=M+64 % of sulphur = ( 64 M+64 ) 100=40.06M+64= 6400 40.06 M+64=160M=160-64=96 u

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