Some avoid marble because they hear it’s hard to keep “looking nice” or they think it’s too expensive. So while it may cost more than some other options you have‚ rest assured your marble floor will long outlive you—if you let it. It does take some care‚ but this can be far outweighed by the sheer elegance it offers. When it’s first installed‚ your marble floor will need a protective sealant. Your natural stone supplier can recommend the best product for the particular marble you’ve selected
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Introduction Reactions don’t always produce the same product‚ even if the reactants are kept constant. Some reactions have the capacity to produce two or more different products‚ depending on the reaction conditions and control such as thermodynamic and kinetic control. Thermodynamic control produces more stable products (University of Windsor‚ 2015). A kinetic control forms products at a faster rate faster rate because of its lower activation energy (UC Davis ChemWiki‚ 2015). By manipulating these
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OF CONCENTRATION ON REACTION RATE INTRODUCTION • Concentration is one factor which has an effect o the rate of a chemical reaction. In chemistry we describe concentration in terms of the number of moles of a substance there are in every cubic decimetre (litre) of solution‚ written as moles.dm-3 of M for short. • In this experiment you will find out how increasing the concentration of the acid solution changes the rate of the reaction between dilute hydrochloric acid and magnesium metal
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experiment was designed to study the effect of exercise on skin temperature and heart rate. Studying the effect of exercise on skin temperature and heart rate yields understanding of how homeostasis is achieved in humans. This knowledge creates opportunity to discover more effective ways to return the human body to optimal functioning‚ rather than a reliance on natural processes. This experiment measured the change in skin temperature and heart rate of a chosen subject for four two-minute intervals of intense
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Factors that affect exchange rates. Like any price‚ the exchange rate deviates from the cost basis - the purchasing power of currencies – under the influence of supply and demand of currency. The ratio of the supply and demand depends on several factors. It reflects connections with other economic categories - cost‚ price‚ money‚ interest‚ balance of payments‚ etc. There is a complex of interweaving and nomination of decisive factors. Among them are the following. • 1.The rate of inflation. The
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What affect does the concentration of sugar have on the rate of respiration of yeast? Apparatus: 1. Stopwatch with a resolution of 0.001 seconds 2. 4 test tubes 3. 200 ml of yeast in a beaker 4. 200 ml of glucose solution 5. 500 ml of limewater 6. 2 delivery tubes 7. 1 test tube rack 8. 1 water bath set to 37°C 9. 2 pipettes 10. 3 measuring cylinders with a resolution of 1ml‚ ranging from 0-30ml. 11. 200 ml of water Hypothesis: The higher the concentration
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found that this experiment gives me an understanding on how osmosis and diffusion works. In its simplicity‚ it explains the process that our bodies (mainly cells) use all the time. It also showed me that even with the temperature changing‚ it doesn’t drastically change the rate of diffusion. Introduction Diffusion is important in all living systems. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration
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symbol of a nation’s power—and who should own it is central to the debate of returning artifacts to their countries of origin. The argument predominantly revolves around the marbles removed from the Parthenon by the British Lord Elgin. While the Greek government does not recognize the British Museum as the owner of the Parthenon Marbles‚ it can be said that they did acquire them by the proper means of the time. Other countries have asked for previously removed artifacts‚ such as the Rosetta Stone and the
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Background……………………………………………………………………2 1.2 Definition of interest rates……………………………………………………..2 2.0 How does an increase interest rate affect the economy in the UK? 3.1 Encourage people saving money and reduce borrowing……………2-3 3.2 Decrease firms to investment……………………………………………..3 3.3 Promoting the exchange rate‚ and makes exports less………………...3 3.4 Reduce the aggregate demand and inflation rate………………………4 3.5 The price and cost will fall………………………………………………
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amounts of solution used. This would make both my results and conclusion invalid and unreliable. I also made sure that the temperature of the water bath was at the correct temperature and I kept on checking the temperature of both my amylase‚ and starch using a thermometer. I made sure both solutions were at the same temperature at all times throughout my experiments‚ so that temperature would not have an effect on my results. This would help me obtain more reliable and accurate results. Also‚ I made sure
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