Element X forms five stable oxides with oxygen of formula X2O,XO,X2O3,X2O4,X2O5. The formation of these explainsA)law of definite proportionsB)law of multiple proportionsC)law of partial pressuresD) law of reciprocal proportions

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane