ECONOMICS 1023

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AS Level Chemistry A H032/02 Depth in chemistry Sample Question Paper

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Bromine is a reactive element. It combines with other non-metals to form covalent compounds. Phosphorus tribromide, PBr3, and iodine monobromide, IBr, are examples of covalent compounds used in organic synthesis. (a) PBr3 can be prepared by heating bromine with phosphorus, P4. (i) Write an equation for this reaction. …………………………………………………………………………………………. [1] (ii) How many molecules are present in 1.3535 g of PBr3? number of...

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ECONOMICS 1023 • ECONOMICS 1023