Chemistry

Biochemistry Sapling Glycoloysis, Gluconeogenesis

In glycolysis, why is MgATP used instead of just ATP for the hexokinase reaction? -Mg2 shields the negative charges of two of the phosphate oxygen atoms of ATP. -Mg2 makes the γ (terminal) phosphorus atom of ATP more accessible to nucleophilic attack by a glucose -OH group. The galactose derivative that enters the glycolytic pathway […]

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Chemistry Learning Targets – Chapter 11

kinetic molecular theory explains gas behavior. gases made of tiny particles far apart relative to their size. particles are in continuous random motion. no force of attraction or repulsion between particles. average kinetic energy of particles depends on temperature. elastic collisions collisions between particles and container or other particles ideal gas hypothetical gas whose P, […]

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An investigation into whether varying light intensity at a stream affects the species diversity

Foulden common has a variety of different habitats including grassland, young woodland, ponds, swamps, fenland, set-a-side and streams which enables a diverse range of organisms to be present in an area. Life for plants and animals in any medium is a constant struggle. Besides the physical environment, predators, parasites and other competitors that have to […]

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Should we produce more artificial fertilizers to produce more food

The world’s cultivated lands are limited and it is sad that only eight billion people can be sustained by the present ability of world food production. Nowadays food shortages in Less Developed Countries, especially African countries have deepened over the few decades and the United Nation has speculated that the world population will increase to […]

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An Investigation to find the Effect of Distance from the Sea on the Number of Species

A preliminary study was carried out at Meadfoot beach, however, studies carried out at Dawlish Warren, the River Lemon and in the woodlands, enabled me to become familiar with skills I would need to carry out my investigation.At different sites, different sampling methods where learnt to enable me to chose the most suitable sampling method […]

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Chemistry Nomenclature

calcium iodide CaI2 magnesium nitrate Mg(NO3)2 iron(II) acetate Fe(C2H3O2)2 lead(IV) oxide PbO2 calcium hydride CaH2 copper(II) sulfide CuS hydrogen sulfide (g) H2S magnesium nitrate MgNO3 iron(II) acetate Fe(C2H3O2)2 calcium iodide CaI2 calcium hydride CaH2 potassium chromate K2CrO4 copper(II) sulfide CuS nickel(II) sulfate NiSO4 tin(II) fluoride SnF2 lead(IV) sulfide PbS2 lead(II) chlorate Pb(ClO3)2 carbon tetrachloride CCl4 […]

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The diuretic effect of different beverages upon the kidneys

We investigated the diuretic effect of different beverages upon the kidneys considering ions of physiological importance, volume and specific gravity of the urine. Materials and method In order to standardise our results we consumed the same food and drink in same quantities on the day of the experiment. Just before drinking our assigned beverage we […]

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Identification of an Unknown Weak Acid

One of the more common reactions seen in chemistry is the acid/base reaction. The most common result of an acid/base reaction is the formation of water and a salt. Such a reaction can be highly useful in the analysis of an unknown acid or base. By titrating the unknown analyte with a standard reagent, several […]

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The preparation of alum from scrap aluminium

In the preparation of alum from scrap aluminium experiment various techniques and apparatus was used to obtain pure alum crystals. During the procedure various potential hazardous chemicals was used and care had to be taken at all times when handling it. Protective clothing and eyewear had to be worn during the whole experiment. Initially a […]

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Measurement of Density and Determination of Partial Molar Volume

The paper is an evaluation report on the partial molar volume, surface tension, and viscosity data of the cyclohexane-benzene binary system, a mixture of nonelectrolyte liquids.Based on many studies, the benzene-cyclohexane system is a well-established as a test system for excess molar volumes measurement devices. This excess molar volume is directly related with the partial […]

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A Short Formal Report Looking Into Setting Up A Chemical Plant

I have been told to write a short formal report explaining to the managing director of a chemical manufacturing company, the social costs, social benefits, private costs and private benefits of setting up a chemical plant on the outskirts of a small market town, and whether or not the company should set up there. The […]

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Separation and Identification of Organic Unknowns

An organic crude product obtained from a ‘worked up’ reaction mixture will in almost all cases need to be purified further. The work-up, by which this procedure is usually known, simply refers to the isolation of the product from the reaction mixture, free from solvent and spent reagents, and does not imply any purification.In order […]

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Chemistry Lab Report 1

Molar extinction coefficient = Absorbent(cavetti length)(concentration) Absorbent = (Molar extinction coefficient)(cavetti length)(concentration) = 32303 For 3. No-mol/L Absorbent = (Molar extinction coefficient)(cavetti length)(concentration) = 3. Xx-4) = 10. 66 Conclusion The purpose of conducting this experiment is to accurately prepare a solution of potassium dichloride. In this experiment, we aim to prepare lox and xx […]

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How Reaction Between Calcium Carbonate

The word and chemical equation which I have constructed for the experiment is:Calcium + hydrochloric calcium + water + carbonCarbonate acid chloride dioxide.CaCo3 + 2HCL CaCl2 + H2 O + CO2Reactant ProductI chose this reaction because it is easy to control as the production of carbon dioxide being produced can be monitored with ease. Additionally […]

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Uses of Chlorine, Sodium, Sodium Hydroxide and Hydrogen

Chlorine chemistry is the building block for many products essential to our well being. Things that we take for granted every day — drinking water, modern medicine and housing, being just a few examples — all rely on chlorine products.Drinking Water and DisinfectionDrinking water chlorination has been called one of the most significant public health […]

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Investigation into the efficiency of various indigestion tablets

Indigestion is a general term used to describe discomfort or pain in the upper abdomen or chest, which is sometimes experienced while our bodies digest the food we eat. A better and more scientific term for indigestion is dyspepsia. Indigestion is caused by too much acid in the stomach. Indigestion tablets contain bases, which neutralise […]

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Determining the concentration of a limewater solution by volumetric analysis

The best way to determine the concentration of a solution is by a titration, and as limewater (Ca(OH)2(aq)) is a base an acid/base titration would be most useful:Ca(OH)2(aq) + 2HCl(aq) 2H2O(l) + CaCl2(l)Precautions to take: working with chemicals, e.g. corrosive hydrochloric acid, means goggles should be worn as well as an apron to protect clothes […]

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An investigation into the effect of a germination inhibitor on the germination of seeds

For a seed to germinate there are specific conditions different seeds need. In this experiment, cress seeds are to be used. Going through the basics first though, for a seed to successfully germinate there needs to be:o An adequate supply of watero A suitable temperatureo An appropriate partial pressure of oxygeno A suitable supply of […]

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The oxidisation of ethanol

Ethanol is a primary alcohol and can be oxidised to produce either an aldhyde or a carboxylic acid. The purpose of this experiment is to oxidise ethanol and then test the product to determine whether it has been oxidised to ethanol or oxidised to ethanoic acid. Safety As with all experiments, it is essential to […]

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Investigation on the labels on bottles

Planning:* There are many ways in which to find out what ions are contained in different compounds. When substance is mixed to make solution, precipitation reactions and reactions with gas specifically are very useful to help us out with identifying which ions are contains in the substances. This test is for negative ions.* Ions can […]

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Electrolysis of copper (II) sulphate solution

This investigation will examine one of the factors that affect the amount off copper deposited during the electrolysis of copper (II) sulphate solution. Electrolysis is the decomposition of an ionic solution by electricity. The electricity splits ionic chemical compounds into separate components, for example, copper chloride can be split into Cu metal and Cl gas. […]

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Chemistry of sulphuric(VI) acid

Sulphuric(VI) acid is very important to our daily lives. In this essay, four aspects of sulphuric(VI) acid, including its production, chemical properties, physical properties and uses will be discussed. Basic information of sulphuric(VI) acid The formula of sulphuric(VI) acid is H2SO4. It is named because the oxidation state of sulphur is +6. The diagram below […]

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