Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: formula for a compound on percentage weight
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arun-rashi (1128)

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Firstly, the answer u got is the correct one.It may be possible that it is given wrong in the book you refferred.
 
To find empirical formula follow the given steps:
1. for element A-  75/75.8 = .989
 
2. for element B: 16/24.2 = 0.66
 
3. get the simplest ratio as
    for A - .989/.66 = 1.5 approx.
    for B - .66/.66 = 1(divide both of them by the smaller one of the two)
 
4. so we get the formula
     A3B2
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