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A + ar + ar2 + .......
the sum of the first two terms is 24 and the sum to infinity is 27. Show that r = +,- 3? What is the bond between silicon and germanium? Are elephants good at conserving water? 100g of calcium carbonate was heated and produced 56g of calcium oxide.
Calculate the mass of carbon dioxide produced.? What is the angle between two skew lines..........?