The Effect of Molecular Weight on the Diffusion Rate of Substances Jesselyn P. Rodriguez Group 4 Section X-2L August 13‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT The effect of molecular weight on the rate of diffusion of substances is tested using two tests: the glass tube test and the agar-water gel test. In the glass tube test‚ two cotton balls were soaked
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Method 1. Sterilise all of your equipment with ethanol‚ blue flame or disinfectant if you can flame it. 2. Collect all equipment together ensuring you collect your goggles and gloves as you are using a flame and gloves and goggles are part of safety precautions. (don’t wear gloves with messing with Bunsen burner only goggles‚ but use gloves when messing with chemicals ensuring goggles on all the time) 3. Clean your surface with disinfectant to sterilise your lab work surface‚ this will prevent
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Ch.5 Yield (total return) = Dollar inc + (end-beg) beg. Value Risk of Return = r= Risk Free rate + Risk Prem r=rRF+DRP+LP+MRP Risk Free Rate = rRF = r* + IP -effects of int rates on PV/Price of securities: int goes up‚ value of bonds goes down‚ stock goes down (NPV) Prices -factors that influence int rates/yield curve 1.production opportunities-return avail w/in an economy from inves. In productive asset; higher prod opp‚ higher return 2. Time preferences for consumption 3
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operations that minimize the adverse effects of processing. The effect of food processing on finished product quality ultimately determines the usefulness and commercial viability of that unit process operation. In the particular case of food drying this indicates that loss of volatiles and flavours‚ changes in colour and texture‚ and a decrease in nutritional value. Furthermore‚ residual enzyme activity and microbial activity in dried foods are essential parameters that effect product quality and shelf life
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Making Your Own Organic Shampoo Once you have chosen your castile soap base‚ you can add your essential and/or fragrance oils to the mixture. Different oils will affect the hair in different ways depending on what you are looking for in a homemade shampoo. For instance if you are looking to control dandruff and to sooth an itchy scalp‚ then you would add Tea Tree oil and Chamomile to your shampoo base. If you wanted to add extra shine to your hair with a great scent‚ then you would add Lemongrass
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Mustard Gas During World War I LOST was the original name for mustard gas‚ it was named after Lommel and Steinkopf. They were the first people who proposed this gas to the military to use as a weapon in 1916. Although mustard gas could possibly been developed as early as 1822 by a French chemist‚ Cesar-Mansuete Desperetez. Thirty-two years later Alfred Riche repeated this reaction of the sulfur dichloride and ethylene‚ but both Riche and Desperetez did not note any harsh properties. In 1860‚
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Organic Food How popular is this product? By Takahiro Hashiguchi & Pascual Retamero Sub-headings What is "Organic Food"? Where are these products situated and how are they promoted in the supermarkets? How does the price of these goods compare with non-organic food items? What information is given on the label of these products? How many people actually buy these products? What is your opinion on these products What is Organic Food? Definition
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Although organic food is popular‚ people should investigate the organic industry before they buy the product called “organic” I. Natural Organic A. Organic definition B. Testing of Organic II. Non-organic foods no different A. Healthier or Not B. USDA say no different calories IV. Are natural and organic foods different? A. Organic B. Non-Organic Organic food to some people is different than what the people who
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The scientific Method 1. Scientific Method- scientific investigation involving the observation of phenomena‚ the formulation of a hypothesis concerning the phenomena‚ experimentation to demonstrate the truth or falseness of the hypothesis‚ and result that validates or modify the hypothesis. Mechanist- Has belief that only natural forces govern living things‚ along with the rest of the universe. Vitalist- believes that the universe is at least partially governed by supernatural powers. Cause
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have different demands in the current industry. The reaction rate of the reaction plays an important role in the production of the ester which could affect the production of the ester. Esterification is a reversible reaction and thus this affects the amount of ester produced as ester hydrolysis changes it back to its reactants. Very little data is available on how does the carbon chain length of carboxylic acid and alcohol affects the rate constant and equilibrium constant of esterification. Thus‚
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