3) Choose the correct alternative from the bracket, complete the paragraph and rewrite. (energy, 9:1, matter, 18 g, weight, 20 g, 9 g, fixed, 1:8, different, 8:1, changed] The law of constant proportion states that "The proportion by of the constituent elements in the various samples of a compound is Eg. The proportion by weight of Hydrogen and Oxygen in water is This means of water is formed by chemical combination of 1 g Hydrogen and 8 g yaan
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