Chemistry · Oct / Nov 2020 · Paper 21 · Question 2
5070
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Part of the structures of carbon dioxide and calcium carbide are shown. O=C=O O=C=O O=C=O O=C=O O=C=O O=C=O carbon dioxide calcium carbide Ca2+ C2 2– Ca2+ Ca2+ C2 2– Ca2+ C2 2– C2 2– Ca2+ C2 2– Ca2+ C2 2– Ca2+ Ca2+ C2 2– Ca2+ C2 2– C2 2– Ca2+ C2 2–
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2(a)[3]
2(b)[1]
2(c)[1]
2(d)[1]
2(e)(i)[1]
2(e)(ii)[1]
2(f)[2]
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