If the mases of Cr and O are in the ratio 13:12 in CrO3 then what is the ratio of O that combines with the same mass of CR in Cr2O3 and Cr2 O7 ?
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Given that,
Ratio of masses of Cr and O is 13:12
We know that mass of O is 16 u
Therefore ,
Mass of Cr = 13 ×48/12=52 u
Now ratio of O with Cr in Cr2O3= 16×3/52×2=6:13
ratio of O with Cr in Cr2O7= 16×7/52×2=14:13
Ratio of masses of Cr and O is 13:12
We know that mass of O is 16 u
Therefore ,
Mass of Cr = 13 ×48/12=52 u
Now ratio of O with Cr in Cr2O3= 16×3/52×2=6:13
ratio of O with Cr in Cr2O7= 16×7/52×2=14:13
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