Welcome to ChemZipper !!!: 40 gm metal oxide (MO) contain 4 gm of Oxygen.Calculate the equivalent wt of a metal.

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40 gm metal oxide (MO) contain 4 gm of Oxygen.Calculate the equivalent wt of a metal.

40 gm metal oxide contains 4 gm of Oxygen mean it has 36 gm of metal.
Then Equivalent wt of metal is 
  E_m = (Wt of metal/Wt of Oxygen)×8
  E_m = (36gm /4gm)×8
  E_m = 72 gm equivalent

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