The percentage of metal in two metal oxides, A and B is `74.2% and 59%`, respectively. Show that the law of multiple proportions is obeyed.

Explanation

`{:("Metal Oxides",,"Percentage of Metal",,"Percentage of Oxygen"),(" A",," 74.2",," 25.8"),(" B",," 59",," 41"):}`
In A, 74.2 g of metal combines with 25.8 g of oxygen
? combines with 1 g of oxygen
` = (74.2 g)/(25.8 g) = 2.87` g
In B, 59 g of metal combines with 41 g of oxygen
? combines with 1 g of oxygen
` =59/41 g = 1.43` g
`:.` The ratio by weight of metal combining with fixed mass of oxygen in A and B
` = 2.87 : 1.43 = 2 : 1`
Hence, law of multiple proportions is obeyed.