Determining the Concentration of an Unknown Solution Graph: The effect of concentration of CuS04 * 5H20 on transmittance. I solved for my unknown by plugging in “y” as my given transmittance value‚ which was 85.0. y = -278x + 100.12 .85 = -278x + 100.12 -99.27 = -278x X = .357M (concentration) The relationship between the transmittance values and the concentration is an indirect relationship. Whenever the concentration increases‚ the transmittance decreases. It can also be reversed
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With the rapid urbanization and development of big cities and towns‚ the graph of crimes is also on the increase. This phenomenal rise in offences and crime in cities is a matter of great concern and alarm to all of us. There are robberies‚ murders‚ rapes and what not. The frequent and repeated thefts‚ burglaries‚ robberies‚ murders‚ killings‚ rapes‚ shoplifting‚ pick pocketing‚ drug- abuse‚ illegal trafficking‚ smuggling‚ theft of vehicles etc.‚ have made the common citizens to have sleepless
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The electron transfer reaction between hexacyanoferrate (III) and sodium borohydride resulted in the formation of hexacyanoferrate (II) ion and dihydrogen borate ion which was strongly catalyzed by AuNPs. The redox reaction is described as BH4- + 8 [Fe (CN)6]3- + 3H2O 8 [Fe(CN)6]4- + H2 BO3- + 8H+ The advantage of hexacyanoferrate ion for this redox study is that both oxidation states of iron (+2 and +3) are quite stable with respect to dissociation and hydrolysis
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EXCHANGE RATES The exchange rate is the price of one country’s currency in terms of another country’s currency Quoted exchange rates can be either direct or indirect‚ Direct: home currency per unit of foreign currency 39 Rupees per US Dollars 80 Rupees per Pound Indirect: foreign currency per unit of home currency 0.0255102 US Dollar per Indian Rupee 0.491594 Pound per Indian Rupee Appreciation of Currency Currency Appreciation means that the given currency
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turning from transparent (acid) to pink (base)‚ then to transparent again‚ as when it reaches neutralization. 10. Repeat step 9 for the second set-up apparatus aside for the second trial and reuse the first apparatus after cleanup for the third trial. 11. The step repeats from step 2 to 8. Next‚ according to the chart below‚ for the next concentration‚ measure 20ml of water in a 500ml beaker and add them to the measured 80ml KOH in a measuring cylinder for the 80% concentration before adding the KOH
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Determining Order from Rates of Reactions AP Chemistry Purpose The focus of this experiment is to recognize that when aqueous solutions of potassium iodate ion (KIO3-) and bisulfite ion (HSO3-) are mixed‚ a series of reactions will occur‚ and the final reaction is signaled by the appearance of a dark blue color. My partners and I investigate how the concentration of the reactants affects the rate of reaction. The purpose of this lab is to find
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The purpose of this lab is to determine the rate of reaction under different circumstances. Different variables will be manipulated to discover their effects on a particular reaction. Changes in temperature‚ pH‚ and enzyme concentration are examples of factors that have the potential to affect the initial rate of an enzyme catalyzed reaction in a controlled experiment‚ whether it be speeding the reaction up or slowing it down. Part I of the experiment establishes a baseline that can be used to compare
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How fast is your reaction? Part 1 – How temperature affect the rate of reaction Chemical equation Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg + 2HCL → MgCl2 + H2 Graph Conclusion and questions 1. What factors/variables did you keep the same in this experiment? * We kept the same volume of hydrochloric acid (10 cm3) and the magnesium ribbon (5cm) because that way we could get a fair test experiment. We also repeated
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Investigation 4.2: Factors Affecting Viscosity Question How does changing the temperature (°C) of glycerin affect the viscosity s -1 of glycerin (l)‚ when tested by dropping a marble from a constant height into the glycerin (l) and timed with a stopwatch until the marble hits the bottom? Design Independent Variable: The independent variable of this experiment is the temperature (°C) of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin
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For this experiment I am investigating how the light intensity as my limiting factor will have in impact on the amount to oxygen produced‚ to should the rate of photosynthesis.Therefore‚ all the controlled variables must remain constant‚ if not there could be an affect on the accuracy of the dependent variable. The CO2 levels are the same for each trial because before placing the sodium hydrogen carbonate i will weigh it with a measuring scale for 1.5 grams. After completing the five measurements
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