Properties of pH The manufacture’s claim is that Sensodyne toothpaste micro hardens tooth enamel to help protect against the effects of acid wear‚ helps stop the twinges of pain from sensitive teeth formulated with low abrasivity‚ neutral pH and gentle yet effective cleaning system. To find out if the manufactures claim on Sensodyne toothpaste is the correct level of pH. I expect the Sensodyne toothpaste to be a neutral pH level as the manufactures claim that this products pH level is neutral
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INTRODUCTION This paper tackles the effects of the foreign exchange rate as a whole and how it affects the country and at the same time how it gets affected. This paper enumerates the advantages and disadvantages of having a strong Peso. The paper also discusses what factors affect the strengthening and weakening of the Philippine Peso. This paper also includes an in depth analysis of how the foreign exchange could affect and gets affected by the economy‚ the society and politics. OVERVIEW
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Effect of Cohabitation on the Rising Divorce Rate The rise of the divorce rate seems to be due to the lack of commitment or understanding of love and longevity in a marriage. Cohabitation can be defined as an arrangement whereby two people decide to live together on a long term or permanent basis in an emotionally and /or sexually intimate relationship (Brannon 2008). Cohabitation is seen as the best way to understand a prospective mate in terms of living and financial stability
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Investigating the effect of discomfort on reaction time Purpose and method The purpose of this investigation was to investigate the effect of discomfort on reaction time in humans‚ measured by dropping a ruler into a subject’s hand. Discomfort was caused by a bowl of ice. Background information Information is carried from the sensory receptors to the central nervous system and back the to effectors by means of nerves. When a number of different processes are involved (a situation informally
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of enzymes‚ components that influence the enzyme’s activity‚ identify an unknown phosphatase‚ influence of inhibitors‚ and determine if inhibition is competitive or noncompetitive. A spectrophotometer evaluated the measurement of color change over a period time due to product being formed. Determining unknown phosphatase and effects from different inhibitors were determined by varying the pH and substrate concentrations. The unknown phosphatase analyzed showed it was an acidic phosphatase. Ph 5 had
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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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Discovery Restriction enzymes were discovered 40 years ago during investigations into the phenomenon of host-specific restriction and modification of bacterial viruses. Restriction enzymes protect bacteria from infections by viruses‚ and it is generally accepted that this is their role in nature. They function as microbial immune systems. When a strain of E. coli lacking a restriction enzyme is infected with a virus‚ most virus particles can initiate a successful infection. When the same strain
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Introduction We are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbonate (marble chips) to hydrochloric acid. When calcium carbonate is added to hydrochloric acid a reaction takes place. The solution fizzes and gives off the gas carbon dioxide. I will collect this gas in a gas syringe and will time how long it takes for the reaction to produce 100cm3 of carbon dioxide. CaCO3 +2HCL Co2 +CaCl2 +H2O CalciumHydrochloricCarbonCalciumWater
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The Effects of Caffeine on the Heart Rate of Daphnia This lab was designed to show how caffeine affected the heart rate of daphnia after exposing them to different concentrations of caffeine for ten minutes. Caffeine is a stimulant‚ which‚ in humans‚ causes heart rates and blood pressure to increase. Its effects range from mild alertness to heightened anxiety and body tension. We wanted to see if caffeine affected the daphnia’s heart rate in the same way. We filled three containers with three different
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Introduction: The rate of photosynthesis varies greatly with changes in wavelengths of light. Light’s colour is determined by its wavelength of light‚ and thus it is possible to devise an experiment to determine which wavelengths of light are most productive for photosynthesis than others. In this experiment I use a plant called Elodea (pond weed). Elodea is native to North America and it is also widely used as aquarium vegetation. The basic structure of these plants are whirls of leaves around
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