PPT Slide

• Find the masses of carbon and oxygen in 100g of I and II.

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Carbon Oxide I Carbon Oxide IIg oxygen/100 g compound 57.1 72.7

g carbon/100 g compound 42.9 27.3g oxygen/g carbon 57.1/42.9 = 1.33 72.7/27.3 =2.66

• Thus demonstrating the Law of Multiple Proportions

• Dividing the grams of oxygen per gram of carbon in II by that  in I, gives a ratio of small whole numbers:

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