Chemistry Lab Report Stoichiometry Design Experiment Percentage Yield of Calcium Carbonate and HCl I. Background Information When marble chips and hydrochloric acid are added together‚ they form sodium chloride‚ water‚ and carbon dioxide. This reaction can be displayed by the balanced equation below; CaCO3 (s) + HCl (l) NaCl(s) + H2O(l) + CO2 (g) As the carbon dioxide is formed‚ it will leave the open beaker as a gas. This will result in a loss of mass. The mass change can then be
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develop weaknesses that result in malfunctions or breakages. Corroded metal can also not conduct electricity‚ which again can interfere with the functions of that metal. Aim: the aim of this experiment is to evaluate the effect that sodium chloride has on the rate of corrosion of iron. 1. Experiment 1 2. Hypothesis: An increase in the level of sodium chloride in water will increase the rate of corrosion of an iron nail. 3. The independent variable is the amount of sodium chloride
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Experiment to determine absolute zero using Charles’s law In this experiment you will be determining the specific heat capacity of oil using an electrical method. You will need to ensure that your write up contains the following: • Clear method (bullet points are ok) and labelled diagram include what is to be repeated and averaged. • State independent/dependent and control variable(s) • State what is to be varied and how (include range and intervals)? • What is to be measured and what with
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Kyle Park 11th Grade AP Psychology 09/23/14 Design a Psychology Experiment The topic that I chose for my experiment is very intriguing and fascinating because most people own pets while raising children. It would be interesting to find out if these various pets can help children with their academic studies. Pets‚ such as dogs and cats‚ help children with social skills and interactions with society. Children can learn myriad lessons just from being around domesticated animals. I believe that children
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Design of Psychological Experiment The Positive Influence of Yoga exercises on work performance in data entry professions Hypothesis Yoga exercises positively influence work performance in data entry professions. We expect that after yoga exercise participants should be able to file data faster and with higher accuracy. Method Independent Variable In this study‚ the independent variable is receiving or not receiving yoga exercise. Dependant Variable The dependant
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Alston Johnson S. West English 101 31 October 2013 [Research Paper Title] In Robert j. Youmans‚ “does the adoption of plagiarism-detection software in higher education reduce plagiarism?” Youmans conducts two experiments trying to prove his apotheosis that students aware of plagiarism-detection software will be less inclined to plagiarize compared to students unaware of the software. In his first study he chose to use nienty university students from California state university majoring in
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Becca DeHaven ChemC-125 Avogadro’s Law Experiment Report Introduction: The following experiment’s purpose was to confirm Avogadro’s Law and experimentally determine the Universal Gas Constant “R”. Amedeo Avogadro hypothesized that all gases of equal volume‚ temperature and pressure would contain equal amounts of moles. This idea that volume is directly proportional to moles sprung from other similar hypotheses. Robert Boyle found that pressure and volume are inversely proportional‚ meaning as pressure
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Experiment to investigate the effect of concentration of electrolyte on the current of voltaic cell Aim The aim is to identify the relationship between the concentration of H2SO4 solution and the current of Cu-Zn voltaic cell. Hypothesis My hypothesis is that the greater the concentration of sulfuric acid the bigger the current of the voltaic cell. In a voltaic cell‚ chemical energy is concerted to electrical though the oxidation and reduction happen on the electrodes. Current will not flow
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CHM2330 Experiment F- Raoult ’s Law Experiment By: Sanah Assaad Student Number: 5267864 Partner: Jihad Arafa T.A: Didier University of Ottawa March 25‚ 2010 Objective: The purpose of this experiment is to study the total vapour pressure of ideal or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult ’s Law to each of
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Project: Practical Investigation Aslam Khan‚ Keenan Wong and Jinhyuk Yeh 2013 Aim: To verify Snell’s Law and find the relationship between angle of incidence and the angle of refraction‚ for monochromatic light passing from air into Perspex. Hypothesis: As the angle of incidence increases so will the angle of refraction (directly proportional). Apparatus: * Laser (Monochromatic light) * Rectangular Perspex * Ruler * Pencil * Paper * Protractor * Calculator
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