SULIT -l’ing: Namir 55/I 5s/1 SCIENCE Paper I Ogos 2012 I jam JABATAN PELAJARANKELANTAN DENGANKERIASAMA MAJLIS PENGETUASEKOLAH MALAYSIA CAWANGAN KELANTAN PMR PERCUBAAN PEPERIKSAAI{ 20L2 1 PAPER SCIENCE (1jam) DIBERITATIU IIVI HI^IGGA BUKA BUKU SOALAIV JAIVGAN dolcmt BoltosctInggeris dort BaltctsoMelut’tr l. Kertas sortlrut irti crclctlctlt ). Calort tlikehenrlukinrcniav’ob senutu soalurt 2’ Ke rta s s o a l a ni tti n rengandurtgi l hal arnanbercetak. I - 55/ r or 2M r)s t\t
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Analysis of Oxygen bearing Organic compounds Abstract The Unknown sample in the experiment can be tested to yield results such as 1° (primary)‚ 2° (secondary)‚ 3° (tertiary) alcohols. Tests such as the dichromate test‚ Tollen’s test‚ Lucas test‚ DNPH test and iodoform test would be very useful in determining the type of alcohol that the unknown sample belongs to. In the experiment‚ the unknown sample underwent series of testing to identify what property of alcohol it belonged to and the result
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DISSOLVED OXYGEN BY WINKLER TITRATION 1. Background Knowledge of the dissolved oxygen (O2) concentration in seawater is often necessary in environmental and marine science. It may be used by physical oceanographers to study water masses in the ocean. It provides the marine biologist with a means of measuring primary production - particularly in laboratory cultures. For the marine chemist‚ it provides a measure of the redox potential of the water column. The concentration of dissolved oxygen can be readily
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Yoga Breathing (Pranayama) - What is Yoga Breathing? Written by: anagonzales Yoga breathing‚ or Pranayama‚ is the science of breath control. It consists of series of exercises especially intended to meet the body’s needs and keep it in vibrant health. Pranayama comes from the following words: * Prana - "life force" or "life energy" * Yama - "discipline" or "control" * Ayama - "expansion"‚ "non-restraint"‚ or "extension" Thus‚ Pranayama means "breathing techniques" or "breath control"
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Without oxygen‚ life itself would be nonexistent. Imagine what would happen if wounds did not get better‚ incisions did not heal‚ and burns did not improve. This is where hyperbaric oxygen therapy (HBOT) comes into play. Oxygen is necessary for the replenishment of tissues‚ healing of the body and assisting with general ailments. HBOT is used for a wide variety of treatments usually as requested in a medical care plan (Society‚ 1996). In this paper I will introduce what hyperbaric oxygen therapy
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of knowledge‚ however there have been some experiments carried out that have had serious negative consequences on their test subjects. Two experiments of this type are the ‘Little Albert’ experiment where a child was conditioned to fear a white rat to test whether fear is innate or conditional. The second experiment was carried out on young orphans to find out if stuttering was a genetic trait or something that can be cured or induced. Both experiments left their subjects permanently affected and
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Work Ethics Generation By Generation A Pakistani generation is defined by the common attitudes‚ experiences and preferences that develop in the context of social and economic events of a defined period of time. Generations typically are associated with birth year ranges. Generational commonalities transcend cultural and gender differences. The social and economic influences that create popular culture are experienced by all within a generation‚ even though culture and gender play a role in how the
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IMPORTANCE OF FORESTS Introduction Trees are mankind lifeline. If they are destroyed‚ there is no way that human beings can survive. From the oxygen that we breathe in‚ the food that we eat‚ to the clothes we wear‚ we owe it all to the trees. Not only this‚ trees act as purifiers of air and receptacles of our waste products. Trees have great economic value too. We get fuel‚ fodder‚ timber‚ medicines and numerous other valuable products from the trees. It is‚ therefore‚ not surprising that trees
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many molecules of oxygen atoms are present in 5.00 mol diphosphorus pentoxide? d) Calculate the number of moles of hydrogen atoms in 11.5 mol water. e) A sample of ethanol (C2H5OH) has a mass of 45.6 g.How many carbon atoms does the sample contain?How many hydrogen atoms are present?How many oxygen atoms are present? Percent Composition from Chemical a) What is the percent of C & H in C2H6 ? b) What is the percent of each element in Al2 (SO3)3 ? Empirical Formula a) What is the empirical
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EXPERIMENT 1: REACTIONS OF ENOLATE IONS WITH CARBONYL GROUPS Aims In this experiment we used two techniques for the reactions of enolate ions with carbonyl groups. One technique used was Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol
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