is‚ 2H2O2 2H2O + O2 Since this is a decomposition reaction‚ it is exothermic. Although hydrogen peroxide can gradually degenerate itself‚ it decomposes much faster with the help of Catalase‚ because Catalase lowers the activation energy‚ the minimum energy barrier that hydrogen peroxide molecules have to overcome to decompose. Since the enzyme lowers the activation energy‚ the rate of reaction increases without consuming enzyme. In this experiment‚ the substrate is hydrogen peroxide. The
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The impact of the minimum price per unit of alcohol on the on and off trade. The Scottish Government has suggested introducing a minimum price per unit of alcohol to reduce binge drinking. The impact of this on the on and off trade will be researched. The Scottish government has introduced a minimum price per unit of alcohol of £ 0.45. www.bbc.co.uk [online] The proposal is to put the price up for really cheap alcohol‚ with that‚ less people would have access to that‚ for example a two litre-bottle
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Chapter 1: Intermolecular Forces: Liquids‚ Solids‚ and Phase Changes Chem 11: General Chemistry 2 Topics 1.1 An Overview of Physical States and Phase Changes 1.2 Quantitative Aspects of Phase Changes 1.3 Types of Intermolecular Forces 1.4 Properties of the Liquid State 1.5 Uniqueness of Water 1.6 The Solid State: Structure‚ Properties and Bonding A hot spring on a snowy day The Kinetic Molecular View of the Three States The characteristic properties of gases‚ liquids
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500 ENGLISH SENTENCES Issue(s) of Contention Mr Honda: Fear of losing face Japanese culture is known for its highly collectivistic nature. They always visualize themselves as part of a group and interactions are supposed to be group vs. group and never individual vs. individual. They are perceptive of their position in the society in relation to acting differently or independently. One of their greatest fears is being detested by the society. In this particular instance‚ it is Mr. Honda losing
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Minimum wage in Nepalese Labor Market Minimum wage is the price floor imposed by the government for the welfare of labor. Price floor is the legal minimum on the price at which a good can be sold. It is an attempt by the government to maintain prices at other than equilibrium levels. When a government imposes a price floor‚ there will be two cases. One the price floor is not binding if the price floor is maintained below equilibrium price level. In this case‚ the market forces naturally move the
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Minimum Needs Programme The Minimum needs Program (MNP) was introduced in the country in the first year of the Fifth Five Year Plan (1974–78). The objective of the programme is to provide certain basic minimum needs and thereby improve the living standards of the people. It is the expression of the commitment of the government for the social and economic development of the community particularly the underprivileged and undeserved population. Initially‚ there were eight components of MNP
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computer ------------------------------------------------- Computational chemistry From Wikipedia‚ the free encyclopedia Computational chemistry is a branch of chemistry that uses principles of computer science to assist in solving chemical problems. It uses the results of theoretical chemistry‚ incorporated into efficient computer programs‚ to calculate the structures and properties of molecules and solids. Its necessity arises from the well-known fact that apart from relatively recent results
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Calculations 1. Rounding Examples *0.1356 (4 significant figures) -> Round answer to 2 significant figures *0.1356 -> 0.14 *314.705 (6 significant figures) -> Round number to 4 significant figures. *314.705 -> 314.7 *0.0035771 (5 significant figures) -> Round to 3 significant figures. *0.0035771 -> 0.00358 *500‚000 (1 significant figure) -> Write this number to have 3 significant figures. *500‚000 - 5.00 x 10^5 *39.501 -> Round to 2 significant figures. *39‚501
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Part 1 A） Chemist 1: New product development This career role involves the development of new paints to meet changing market needs. The chemist would be working as a member of a team developing and testing new colloidal paints to suit specific purposes. This might include weatherproof paints‚ which retain their colour and are resistant to solar radiation‚ or indoor paints that can be easily and repeatedly washed. Chemist 2: Environmental monitoring This career role as a public servant could
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Appendix APPENDIX 1 Chemical tests for functional groups Homologous series/ Typical compound Functional group(s) Alkanes CH3CH3 ethane C – C and C–H Alkenes CH2 = CH2 ethene C=C Chemical tests/Observations Add liquid bromine in ultraviolet light (or sunlight): White fumes of HBr liberated; decolourisation of bromine occurs slowly (a) Add Br2 in CCl4 at room temperature: Decolourisation of bromine occurs immediately CH2 = CH2 + Br2 → CH2BrCH2Br (b) Add acidified
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