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Calculate the molecular mass of the following : (i) H_(2)O (ii) CO_(2) (iii) CH_(4) |
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Answer» Solution :STEP I. Calculation of SIMPLEST whole number ratios of the elements `{:("Element","Percentage","ATOMIC mass","Gram atoms (Moles)","Atomic ratio (Molar ratio)","Simplest whole no. ratio"),("Fe",69.9,56,(69.9)/(56)=1.25,(1.25)/(1.25)=1,.2),("O",30.1,16,(30.1)/(16)=1.88,(1.88)/(1.25)=1.5or 3//2,3):}` The simplest whole number ratios of the different elementsd are `:Fe :O : : 2 : 3` Step II. Writing the empirical formula of the compound The empirical formula of the compound `= Fe_(2)O_(3)` |
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