Research Question How does changing the concentration of Zn2+(aq) ions (0.2‚ 0.4‚ 0.6‚ 0.8‚ 1.0) (moldm-3) affect the voltage (V) of the voltaic cell consisting of Zinc and Copper half cells? Aim To see the relationship between increasing the concentration of Zinc ions and the voltage that is obtained from voltaic cell. The concentration of zinc ions can be directly manipulated by changing the concentration of a zinc sulphate aqueous solution‚ and the voltage will be measured using an electronic
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of different concentrations. The water passes from a region of high concentration to a region of low concentration‚ until the two concentrations are equal in concentrations of water. Many cell membranes behave as semi permeable membranes‚ and osmosis is a vital mechanism in the transport of fluids in living organisms‚ for example‚ in the transport of water from the soil to the roots in plants. If a cell is in contact with a solution of lower water concentration than its own
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Principle‚ Beer’s Law and Spectrocopy. The first reaction was run to completion using LeChatier’s Principle and the second reaction was run to equilibrium. A spectrophotometer was used to measure absorbances. Using a graph of absorbance versus concentration of FeSCN2+ was used to determine that the molar absorptivity constant was 3670. Beer’s Law was used to determine that the average equilibrium constant was 33.1793. Introduction: The purpose of this experiment is to determine the value of the
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Effects of oligomycin‚ ouabain‚ p-Aminohippurate‚ sodium concentrations and potassium concentrations on active transport of the Malpighian tubules of Acheta domesticus Key Words: Malpighian tubules‚ Acheta domesticus‚ PAH‚ ouabain‚ oligomycin‚ Na+‚ K+ Silvia Kilic 100488712 BIOL 3040U CRN: 70041 Thursday‚ March 5th‚ 2015. Results The Malpighian tubules were incubated in the solutions for 15 minutes before being observed. The transport of CPR into the lumen was highest when there was no addition
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In this experiment‚ we had to demonstrate the process of osmosis using potatoes‚ and to determine the concentration of the cytoplasm of the potato. To demonstrate this‚ we had 6 test tubes and poured in different sucrose solutions of the following concentrations: 0.0M‚ 0.1M‚ 0.2M‚ 0.5M‚ and 1.0M. Once added in with all the sucrose solutions‚ we added in the 6 cylindrical potatoes of equal diameter and length. Before and after putting it in the potatoes‚ we had to weigh the initial and the final mass
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will move from an area of high concentration to low concentration. Also‚ the rate of which it would move depending on concentration. The higher the concentration of sucrose inside of the dialysis bag‚ the faster the rate of water will travel into the bag. The rate of osmosis increases as the concentration of sucrose inside the bag is higher. Correspondingly‚ with bag 5‚ the water inside the dialysis bag would travel once again to a place of lower water concentration‚ the sucrose in the beaker. This
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and Brownawell 2010). While trying to find the reason why these rivers keep getting contaminated‚ Brownawell found out that the wastewater areas found in surficial sediments around the Hudson River contained Quaternary Ammonium Compounds. High Concentrations of the Quaternary Ammonium Compounds are mostly found in muddy and sediment areas allowing contaminated sewages to continuously occur in urban estuary sediments (Li and Brownawell 2010). Many Quaternary Ammonium Compounds have a substance called
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The amount of solute dissolved in a solvent is called concentration and it can be expressed in several different ways. First and foremost‚ the expression of concentration can be in term of molarity. Molarity is the number of moles of solute per liter of solution. The unit of molarity is M and is read as molar. Molarity = moles of soluteliter of solution (Normality‚ 2012) Normality (N) is another way of expressing the concentration of a solution. It is based on an alternate chemical unit
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commercial in flame propagation‚ duration‚ temperature difference‚ and heat content with varying concentrations. The study is an experiment divided into three phases‚ fermentation‚ distillation‚ and the flame testing. Gathered data has been tabulated and treated with Z test and Randomized Block Design. With the findings‚ Santol peelings can be a potential source of ethanol. Keywords - alternatives‚ concentrations‚ fermentation‚ distillation‚ duration‚ heat content‚ propagation I. INTRODUCTION Energy
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Chemical Equilibrium- Le Chatelier’s Principle; Chemistry 0993 By Amanuel asgodom For Dharinee Doobur-Choytun Partner cherry November 28‚ 2013 Purpose: To observe and record Le Chatelier’s Principle on how temperature & concentration change affects in a reaction. Apparatus and materials; See on chemistry lab manual 0993e chan henry j johnstone- g pawelchack Vancouver community college. Page 52… le chateliers principle. See the detail from the le chateliers principle Prelab
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