Courtney Cubine 6/19/13 June 20‚ 2013 Separation of a Mixture of Solids Purpose: The purpose of this experiment was to help the student learn how to separate a mixture of multiple different solids and determine the percentage of each component of the mixture. Procedure: I started off by removing the iron using the magnet‚ and then I weighed all of the iron I obtained from the mixture in a container I already knew the weight of and calculated the net weight of the iron. Next
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anywhere you look around. My section for this presentation was to do a research on ex- convicts that are homeless. Basically my slides will consist of the following; first I will show facts on how ex -convicts are treated‚ statistics and quotes. For instance‚ some ex-convicts cannot return home because offenders convicted of drug crimes are barred from public housing. Secondly‚ I will talk about the laws to help ex-convicts with different programs. For example‚ President Obama signed “The Second Chance
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Lab Report for Experiment #10 Stoichiometry of a Precipitation Reaction Student’s Name ____________________ Date of Experiment ___________ Date Report Submitted _________________ Title: Purpose: Instructor Changes: Weigh out about 1.7 g of CaCl2·2H2O and record your mass to +/- 0.1 g (for example 1.6 g‚ 1.7 g‚ or 1.8 g). We have made this change so that you will have 2 sig figs in subsequent calculations. Have you made any changes to the procedure? Please explain: Data Tables and Observation:
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causes the membrane potential to change to a less negative value. How well did the results compare with your prediction? Your answer: Because outside has more K+‚ the rate of diffusion is less. The resting membrane potential will become less negative. 3. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? Your answer: Because it did not effect the resting membrane potential. 4. Discuss the relative permeability of the membrane to Na+
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pt each) 1. Incandescent light bulbs have a very thin filament that glows when hot. Thin filaments have very LOW resistance. 2. The 12V battery in your car operates a 25 amp car stereo. What is the resistance of this stereo system? __0.48 ohms___ 3. A “2D” Maglite flashlight runs on 3.0V. What is the current through the bulb if resistance is 15 Ω ? __0.2 amps__ 4. How many volts must an iPod charger provide to charge an iPOD using .85 Amps at 35 Ω? ___29.75 V_ 5. You need to buy a long extension
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did the 1 mile walk and my time was 17 minutes and 26 seconds. My heart rate at the end of my walk was 100 bpm. My VO2 max was a 48.72 and for my people are around my age that just ranked in the category of just good. I was not able to perform the 3 minute step test because of medical reasons. The benefits of the step test would be that there is not a lot of energy being exerted by the participants. Unlike running‚ stepping comes natural making this test less challenging people. The people who
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mastoid prominences ‚ pelvis and the muscular insertions. - Evaluated the orbits‚ the mandible‚ the mouth‚ the race of the individual. - Measured the length of the Bones and looked at these under a microscope and saw certain cellular development. 3) DNA found in the mitochondrion of a cell differs in structure and is separate from the DNA found in the cell nucleus. Mitochondrial DNA‚ or mtDNA‚ exists as a circular loop of double-stranded DNA rather than the linear form found in nuclear DNA. However
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M01_ZAO2177_01_SE_CH01.QXD 3/4/11 1:36 AM Page 13 R E V I E W S H E E T EXERCISE NAME_________________________________ LAB TIME/DATE ________________________ A C T I V I T Y 1 1 Cell Transport Mechanisms and Permeability Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. ______________________________________________________ __________________________________________________________________________________________________
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How Temperature Affects Amylase Activity Abstract This study of the effect of temperature on the enzyme amylase was performed to determine the relationship between the enzyme amylase and temperature. The rate of reaction was found to increase as the temperature of the environment was raised. As the temperature was raised from 5°C‚ 20°C‚ 35°C and finally to 80°C the rate of reaction followed this trend and also increased. However as predicted in the hypothesis of this experiment when the temperature
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any significance in the background> What area of the painting do you focus on the most? Why? What is the relationship between the house and the railroad? What structures do you notice about the house? What connections can you make to the poem? 3. A Matter of Scale • What is the tone? • How does Cole compare things? • What is the theme? • • • • • • • Did Cole make you see things differently? If so‚ how? Why does Cole quote another author to end the story? Should Cole have ended
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