10.2 Determining the Concentration of Ammonia in Window Cleaner Solution Design (D) Aim To determine the concentration of ammonia‚ NH3‚ in the commercial window cleaner solution Background Window cleaner contains ammonia‚ NH3‚ a weak base‚ which helps remove dirt from glassware. The concentration of ammonia in the window cleaner solution varies by brands. Titrating the window cleaner solution with an acid of known concentration allows us to calculate the concentration of the ammonia in that
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The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium Sarah Cain SCH 4UB Mr. Lankin April 1‚ 2009 Introduction The nature of the problem is to design an investigation that examines a variable affecting the reaction rate. In this experiment‚ magnesium will be reacted with different concentrations of sulphuric acid. The reaction is shown by the following chemical equation: H2SO4 (l) + Mg (s) → MgSO4 (aq) + H2
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Hydrogen Concentration Sensor Selection for the Renewable Energy Vehicle School of Mechanical Engineering‚ The University of Western Australia ABSTRACT: This paper discusses the selection of a hydrogen concentration sensor for the use in the University of Western Australia’s Renewable Energy Vehicle (REV). Prior to selecting a sensor‚ it is important to consider the available sensing methods and the specific properties of the measurand‚ hydrogen. The selection process leading up to the purchase
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Aim: To investigate the effect of hydrogen peroxide concentration on enzyme catalase Indroduction: Enzymes are proteins. They function as biological catalysts. They lower the energy barrier of a reaction so that the reaction can take place at body temperature. Also‚ they can speed up Metabolic reactions without being changed or used up. During a reaction‚ an enzyme molecule combines temporarily with the substrate. When the reaction is complete‚ the enzyme molecules returns to its original dorm
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AE4: Essay Plan Directions: Topic: Identify and discuss a key public health problem in your country or region. What solution have been proposed for this problem? Access the effectiveness and practicality of these solution. Introduction: Paragraph 1 （must include a thesis statement） Nowadays‚ more and more people in my country concern about a health problem‚ that is heart disease which is a dangerous illness. A increase number of people get heart disease in the ten years. So is time to take
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appear. Results and Conclusions 1. Contained in the following chart: • Concentrations are calculated by multiplying the concentrations by the amount of liters of that solution divided by the total volume. • -∆S2O8-2 is calculated by dividing the concentration of the S2O3-2 by the number of moles required‚ as seen in the chemical equation (2 moles) • ∆t was determined during the lab
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Spectrophotometric determination of Ascorbic acid Concentration in an Unknown Solution Introduction: The naturally occurring organic compound with antioxidant properties is Ascorbic acid shortly referred as (AA). Normally the color of Ascorbic acid is white‚ but in some cases of impure samples it appears yellow in color. Ascorbic acid is solid in state. In water it dissolves well to give mildly acidic solutions. Ascorbic acid is one form ("vitamer") of vitamin C [1]. So‚ Ascorbic Acid (AA)
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Italians‚ and the Japanese led to horrible death. The concentration camps killed thousands of people. The Japanese concentration camps‚ in particular‚ were awful places that forced hard labor out of prisoners of war until they died. During World War II‚ the Japanese lost to the Allies and surrendered‚ but the concentration camps of the Japanese still caused the death of many prisoners of war. The hard labor forced by the Japanese concentration camp runners wasn’t only unsafe and unhealthy for the
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How Enzyme Concentration can Affect Rate of Reaction The purpose of this investigation was to see how the concentration of an enzyme affected the rate at which a substance was broken down. We did this by using a white protein called casein. Casein is found in milk powder‚ it is a protein and used mainly as a binding agent in foods‚ because it is mad to proteins and joins to a phosphoric acid it belong to a group called the phophoproteins. In terms of in milk it is said to be healthier if it is
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Full Report on Exercise 4.2 ESTIMATION OF PROTEIN CONCENTRATION BY SPECTROPHOTOMETRY And Exercise 4.3 GEL FILTRATION CHROMATOGRAPHY Joel Don M. Untalan CHEM 160.1 – 1L AY 2013 – 2014 Groupmates: Sonette Yao Kristopher Quilan Laboratory Instructor Carmelo C. Briones I. Introduction Analyzing proteins in determination of protein concentration by spectrophotometry is important. It determines to what concentration of a certain protein is in a crude sample. In this technique‚ a wide
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