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Cleverland High School Maya End Of Term One Examination 2025 Senior Five Chemistry Examination

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P525/1 CHEMISTRY Paper 1 2 Hour s CLEVERLAND HIGH SCHOOL - MAYA END OF TERM I EXAMS - 2025 SENIOR FIVE CHEMISTRY Paper One INSTRUCTIONS:  Answer all items Item one A sample of chlorinated water was picked from Cleverland high school in Maya and analyzed by the senior five students in the laboratory using spectrometry. Results obtained showed that chlorine had three isotopes Cl - 35 , 35; Cl - 35 , 37; Cl - 37 , 37 and the spectrometer readings showed three peaks of 70 , 72 and 74.The relative atomic mass of chlorine is 35.5. Students offering humanities who watched as they passed by the laboratory were much interested in the practicum lesson and requested for some explanation as to what was going on. Task As a senior five st udent who has some knowledge of spectrometry (a) Explain to the se students i) Briefly what is spectrometry? ii) Why were three peaks observed? iii) Calculate the percentage abundance of each isotope of chlorine from the data iv) Sketch the mass spectrum of the isotopes of chlorine. Item two A school garden at school usually gives poor yields. A soil sample analysis was carried out and results showed that the sample had deficient phosphorus. Phosphorus among other uses, it is also important for proper plant root growth. An agricultural specialist from NARO based on the results has advised that a fertilizer with more phosphorus be added to the soil. Task You have been approached by the Agriculture students for some informati on about the following fertilizers; calcium phosphate, sodium phosphate and magnesium hydrogen phosphate a) Write the chemical formulae of the above fertilizers b) Using your knowledge of chemistry help the students make an appropriate choice for the best fertilizer to use in the school garden …
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Cleverland High School Maya End Of Term One Examination 2025 Senior Five Chemistry Examination, is an educational document on StudyUganda.com. This resource includes: "P525/1 CHEMISTRY Paper 1 2 Hour s CLEVERLAND HIGH SCHOOL - MAYA END OF TERM I EXAMS - 2025 SENIOR FIVE CHEMISTRY Paper One INSTRUCTIONS: ……" (Format: PDF) — 113.93 KB, 3 pages. Added July 23, 2026.

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