Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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February 20th‚ 2014 Lab report 4 Abstract This pBlu lab had for purpose to present the changes of the strain of E. coli bacteria due to new genetic information being introduced into the cell. In this experiment we are freezing and heat shocking the E. Coli bacteria that is then forced to take the plasmid DNA. The E. coli then transforms the pBLu plasmid‚ which carries the genes coding for two identifiable phenotypes. After following the Carolina Biological steps our lab worked well and we able
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The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel‚ which leaves a clean test tube. Incomplete combustion is
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LAB REPORT Introduction: In a chemical change‚ the identities of substances change and new substances form. In an equation the substances on the left are the reactants. The substances on the right are the products. In this experiment the objectives are to observe evidence that a chemical change has taken place. Infer from observations that a new substance has been formed. Identify and record observations that show energy is involved in chemical change observe the color‚ solubility of some substances
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Lab 6.C Hypothesis: If enzyme activity is affected by the pH of a solution‚ then the enzymes will experience the greatest activity at a pH of 6. Variables: Independent Variables Dependent Variable Controls Four different pH values (10‚ 7‚ 6‚ and 3) Change in color of the solution The amount of potato extract‚ pH solution‚ and catechol used (1 cm +/- .1cm) Size of the test tubes Amount of time allowed for the catechol to sit with the potato extract and pH solution (20 minutes with 5
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cxcxcxThe controversy over the Charles River Bridge dated as far back as October 15‚ 1640 when the Massachusetts legislature‚ in accordance with common law‚ assumed control over public ferries. The legislature proceeded to give Harvard College the power to run a ferry on the Charles River between Boston and Charlestown. Harvard continued to operate the ferry‚ and collect its profits until 1785. That year‚ a group of men petitioned the state legislature to build a bridge across the river due to the
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science in such a way as Jacques Charles. He devoted his life to studying ballooning and in turn found a well-known scientific discovery. He was not always interested in the sport of ballooning or science‚ but he ended up discovering a way to change ballooning and science at the same time. Born November 12‚ 1746 in Beaugency France was a boy named Jacques Charles (Jacques). His nationality was French and his occupation was a physicist (“Jacques” Science). Charles began his professional life as a
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Fire tube boiler structure and safety systems WNS series fire tube boiler are high quality‚famous industrial steam boiler in Pakistan .The capacity is from 1ton to 20ton‚pressure is from 0.7mpa to 1.6mpa WNS series automatic gas fired boiler is horizontal‚ three-pass‚ wet back shell boiler. The main structure includes: Boiler shell‚ Bellows furnace‚ Returns burns room‚ Threaded gas pipe‚ etc. The shell and the furnace are made by 20g boiler special steel. Furnace & Returns burns room‚ Tube plate
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Malayan Law Journal Unreported/2010/Volume /Affin Bank Berhad v Precision Tube Product (Malaysia) Sdn Bhd & Ors - [2010] MLJU 119 - 9 February 2010 [2010] MLJU 119 Affin Bank Berhad v Precision Tube Product (Malaysia) Sdn Bhd & Ors HIGH COURT (JOHOR BAHRU) VERNON ONG LAM KIAT‚ JC GUAMAN NO (MT-1) 22-313-2005 9 February 2010 Sivapakiam Krishnan (H. M. J. Shaharom & K. S. Wee) for the plaintiff Ng Chew Hor (Ng. Fan & Associates) for the fourth defendant Vernon Ong Lam Kiat‚ JC GROUNDS OF JUDGMENT
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Abstract The purpose of this lab was to test if ethanol affects the reaction involving hydrogen peroxide and catalase. Tests were performed by putting chicken liver‚ ethanol solution (diluted ethanol solution for other trials) and hydrogen peroxide in a test tube with a side arm‚ and having a rubber tube lead the oxygen gas into a gas collection tube. Results from the tests showed a negative correlation‚ this means that the more diluted the solution of 95% ethanol was‚ the less oxygen gas collected
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