Silveira Date of Submission: September 25‚ 2013 Lab Section: CHE110L*Z Purpose The purpose of this experiment is to use two common laboratory methods to see how mixtures can be separated based on physical properties. Paper chromatography will be used to separate the dye colors from M&M candy to see which colors contain yellow #5. Gravimetric separation will be used to separate salt and sand from a mixture. Procedure The procedure for this lab can be found on pages 16 – 30 in “General Chemistry
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Lab 2 Sara Rodriguez Period 2 Purpose: What is the more accurate way to measure volume‚ by using displacement or by using a ruler? Hypothesis: If the method of displacement is used ‚ then the results will be more accurate than measuring the volume using a ruler. Materials: -250 mL graduated cylinder -Triple beam balance -A weigh boat -Ruler -Samples Procedure: 1. Gather materials such as ‚ samples‚ weigh boat‚ triple beam balance ‚ graduated cylinder‚ ruler and water. 2. Take the materials
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Physiology‚ Berry HOMEOSTASIS LAB ACTIVITY Introduction: Homeostasis means maintaining a relatively constant state of the body’s internal environment. The term used to describe a pattern of response to restore the body to normal stable level is termed negative feedback. When a stimulus (environment change) is met by a response that reverses (negates) the trend of the stimulus‚ it is negative feedback. As a result the internal environment is returned to normal. Pulse rate is constantly checked
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Mariana Mendoza Alvaro Puccini Maria Quin Solubility Lab Purpose: The main purpose of doing this lab is to learn how to interpret solubility graphs and how the temperature does affects the solubility of different substances. There are other objectives of the lab which are learning what are concentrated‚ diluted‚ supersaturated‚ and saturated substances and how can they be identified. The hypothesis of this lab would be that when temperature increases‚ the amount of salt and copper
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Unit 2 Home Labs Goals: • Read Safety • Perform Changes: Physical or Chemical Lab • Perform Special Physical Properties of Matter Lab • Perform Paper Chromatography Lab Turn-in: 1) Changes: Physical or Chemical Lab - Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 2) Special Physical Properties of Matter Lab – Completed Procedure / Observations‚ questions‚ and
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Problems/Answers: FIN 534 I have provided the answers to Chapters 6 and 7‚ you are to provide the solutions and explanations‚ namely‚ how were you able to determine the same answers. I want to see‚ how you go about solving these problems. I would encourage you to use the MyFinanceLab and go over the previous Chapters. Keep in mind that these responses are due‚ November 1‚ 2010. I will use your submission to grade you and not the group work that you did in class‚ last Thursday. I trust that you will
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Acids‚ Bases‚ and pH Lab In this lab the testing of whether or not a substance was an acid or a base occurred. Each substance was tested with the indicators red litmus paper‚ blue litmus paper‚ pH paper‚ phenolthalein‚ bromthymol blue‚ and phenol red. While the substances were tested the group noticed that the substances tested with the red and blue litmus paper‚ the phenolthatein‚ bronthmol blue were the easiest to interpret. The color changes that occurred when this indicator was put into a substance
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rate of peroxidase activity. During the lab‚ the lab group tested 7 test tubes‚ including 1 blank‚ with different amounts of pH 5 buffer‚ H2O2‚ Peroxidase‚ and Guaiacol. After the certain amount of mL per substance was mixed‚ the absorbance readings for the effect of peroxidase concentration were taken from the spectrophotometer. The results for the effect
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called quarks. The ‘up’ quark has a charge of 2 e : a ‘down’ quark has a charge of – 1 e‚ where e is the 3 3 –19 C). elementary charge (+1.6 x 10 How many up quarks and down quarks must a proton contain? up quarks A B C D 0 1 1 2 down quarks 3 1 2 1 6 A nucleus of the nuclide 241Pu decays by emission of a β-particle followed by the emission of an 94 α-particle. Which of the nuclides shown is formed? A 239 93 Np B 239 91Pa C 237 93
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you find out which port Windows Firewall opened up on NYC-CLb? 70-680 Configuring Windows 7 Lab Manual 18. Take a screen shot of the Add or Remove Snap-ins dialog box‚ showing the two Event Viewer instances you added‚ by pressing Alt+Prt Scr‚ and then paste the resulting image into the Lab14_worksheet file in the page provided by pressing Ctrl+V. 70-680 Configuring Windows 7 Lab Manual Exercise 14.2 Configuring Remote Desktop Access Overview Before you can test the
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