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Baptist High School End Of Term 2 Examination Senior Two Chemistry 2025

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1 Name……………………………………………………….……….combination ……………… BAPTIST HIGH SCHOOL END OF TERM 2 EXAMINATIONS S.5 CHEMISTRY 2 hours 30 minutes INSTRUCTIONS  Answer all items.  All answers are to be written in the spaces provided  At s.t.p, 1 mole of a gas occupies 22.4 litres  The following are relative atomic masses of elements. (C=12, H=1, O=16, Na=23, Cl=35.5) Item 1 Nile post newspaper recently posted that “Nile breweries launches a campaign for smart drinking.” This campaign involves the industry reducing its alcohol production capacity to minimize the alcohol in public. To avoid reduction in revenue , the company proposed supplying the excess 200kg of ethanol as a fuel for cooking by burning it. An industrial chemist though, advised that converting the ethanol to LPG used in gas cylinders is be tter since LPG contains propane which produces more energy when burnt. Below are the equations showing how energy is produced from the fuels. Ethanol: CH 3CH 2OH (l) + 3O 2(g) 2CO 2(g) + 3H 2O(l) Propane: CH 3CH 2CH 3 (g) + 5O2(g) 3CO 2(g) + 4H 2O(l) 2 TASK (a) Explain the c ategory of energy change involved . (b) Determine the volume of carbon dioxide at s.t.p produced when the fuel the company proposed is used. (c) By using equations, d escribe how the conversion which the industrial chemist advised can be effected. 3 Item 2 Google Nest, a company that makes smoke detectors has inspired investors in Uganda to start up one. Engineers in Google Nest explained that ionization smoke detectors contain a radioactive material that decays releasing rays with a very high ionizing power but a very low penetrating power incapable of penetrating most metals. These rays then hit the oxy gen molecules in air into atoms. The atoms are then stripped off of their …
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Baptist High School End Of Term 2 Examination Senior Two Chemistry 2025, is an educational document on StudyUganda.com. This resource includes: "1 Name……………………………………………………….……….combination ……………… BAPTIST HIGH SCHOOL END OF TERM 2 EXAMINATIONS S.5 CHEMISTRY 2 hours 30 minutes INSTRUCTIONS  Answer all items.  All answers ……" (Format: PDF) — 591.03 KB, 9 pages. Added July 23, 2026.

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