A box contains some identical red coloured balls,

Question:

A box contains some identical red coloured balls, labelled as A, each weighing

2 grams. Another box contains identical blue coloured balls, labelled as B,

each weighing 5 grams. Consider the combinations AB, AB2, A2B and A2B3

and show that the law of multiple proportions is applicable.

Solution:

Masses of B which combine with a fixed mass of A are

10g, 20g, 5g, 15g

2 : 4 : 1 : 3

This is the simple whole-number ratio.

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