An experiment to investigate the effect of temperature on the rate of reaction of the Enzyme Trypsin. Aim: This investigation was on the effect temperature has on the rate that the enzyme trypsin hydrolyses its substrate‚ a protein found in milk (casein). This investigation was conducted under controlled conditions‚ the temperature being the changeable variable. Trypsin and its substrate (powdered milk which is a source of the protein casein) were heated in a water bath. The contents of the two
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experiment was to investigate the effect that a glucose concentration has on the rate of fermentation. This was done by adding a variety of different glucose concentration into a test tube‚ siting in a water bath. The carbon dioxide would be collected in the test tube and therefore would measure the rate of fermentation. The results parsley supported the hypothesis that‚ “If the glucose concentration increases‚ the rate of fermentation increases‚ therefore the more carbon dioxide released”. Background
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Three Month Treasury Bills and The Variables That Affect the Rates Abstract This paper attempts to create two models that can predict fluctuations in three-month US Treasury Bill yields. Using both simple and multiple regression analysis‚ we analyze the independent variables traditionally associated with risk free U.S. money market interest rates including the Consumer Price Index‚ the Industrial Production Index‚ and the Unemployment rate over two periods‚ July 1990-March 2001 and March 2001-December
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Some metals react with acids while others do not. In this experiment‚ students will perform 2 reactions: aluminum/zinc with excess 6M hydrochloric acid and aluminum-zinc alloy with excess 6M hydrochloric acid. The purpose of this experiment is to determine the atomic mass of each metal and the percent composition of a known mass aluminum-zinc alloy by determining the moles of H2 gas formed. Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) 1 mole of H2(g) is produced for every 1 mole of Zn(s) 2. 2Al(s)
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light as the result of a chemical reaction with little or no heat produced. The glow sticks can operate by causing two chemicals to mix. A common reaction used for these devices is hydrogen peroxide and phenol oxalate ester. The hydrogen peroxide is kept in a thin‚ small glass vial in the middle of the stick‚ and the second chemical phenol oxalate ester is in the main body of the light stick. Bending the light stick in the middle causes the small glass vial of hydrogen
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The graph shows that the respiration rate does increase as the yeast concentration rises‚ but levels off and eventually reached its saturation point‚ or decline‚ which occurs at 8.5g. This decline may occur because there are too many yeast molecules in comparison to the glucose‚ which may lead to yeast cells hindering a collision thus lessening the reaction. The respiration rate increases as more yeast is added because it gives more opportunities for molecular collisions and so the amount of successful
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CHAPTER I THE PROBLEM AND ITS BACKGROUND Introduction Communication is the art of conversation between two or more persons by means of speaking‚ writing or using a common system of signs or expression. It requires training and experience to communicate well with other people. On the other hand‚ the act of communication involves verbal‚ non- verbal and para- verbal components where these components refer to the content of the message conveyed‚ the choice and arrangement of words‚ the message
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lObjective This experiment explores how salt and sugar affect the melting rate of ice in water. Research Questions: * Does adding salt to ice and water slow down‚ speed up‚ or not change the rate the ice melts in the water? * Is salt the only substance to have this effect? What about sugar? Knowing how to speed up the melting rate of ice is very important information for anyone who needs to de-ice roads or driveways after a winter storm. While it seems simple‚ adding salt to ice water
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literally be nothing and the galaxy wouldn’t exist. Also‚ science helps us figure out and solve complex problems like preventing accidents such as the Hindenburg blimp accident. Overall‚ science is everywhere and in this essay I am going to discuss hydrogen and the Hindenburg blimp accident. Even though there are many elements on the periodic
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Children’s learning and development can be affected by certain person factors and external factors. Personal factors are to do with the person (it’s personal to them) and includes: Learning difficulties; Sensory Impairments‚ Disabilities‚ Health Status (good health or bad health)‚ diet (good diet or bad diet)‚ stress‚ the environment and any environment genetics (asthma‚ smokers). External factors are outside forces‚ such as: Education; Care Status/Family (in care/”broken home”)‚ Family Environment/Background
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