Question

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Answer 1

Answer:

LAW OF MULTIPLE PROPORTION

• It states that when two elements combine with each other to form more than one compound, the weight of one element that combines with a fixed weight of the others are in the ratio of small whole numbers.

Explanation:

Illustration

(1)In yellow oxides

Mass of oxide=3.45g

Mass of lead=3.21g

Mass of oxygen=0.24g

Ratio of O/Pb=0.24/3.21=0.075

(2)In brown oxides

Mass of oxide=1.195g

Mass of lead=1.035g

Mass of oxygen=0.16g

Ratio of O/Pb=0.16/1.035=0.5

(3)In red oxides

Mass of oxide=1.77g

Mass of lead=1.62g

Mass of oxygen=0.16g

Ratio of O/Pb=0.16/1.61=0.1

Therefore the simple ratio of oxygen in three lead oxides is given as 0.075:0.15:0.1=3:6:4.