What is the emprical formula of vanadium oxide , if `2.74g` of the metal oxide contains `1.53g` of metal ?

metal combines with oxygen to form two oxides, having the following composition: (i) 0.398 g of the first metal oxide contains 0.318g of metal. (ii) 0.716 g of the second oxide contains 0.636g of the metal. Show that the above data agrees with the law of multiple proportions.

Metal X forms wo oxides. Formula of the first oxide is XO_(2) . The first oxide contains 50% of oxygen. If the second oxide contains 60% of oxygen, the formula of the second oxide is

The atomic mass of a metal M is 56, then the empirical formulae of its oxide containing 70% metal