using Beer’s Law. The measurement errors could have occurred due to the fact that one partner’s perspective of a measurement could be different than the others‚ but the lab cannot be preformed solo. When it comes to improving the lab‚ there aren’t to many ways to ensure accurate measurements due to the fact that in any experiment there are human and environment variables that cannot be accounted for‚ or even prepared for. In any experiment there will always be human error. Group Lab Report The
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04.05 Chemical Reactions: Combustion: Lab Worksheet and Rubric Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure: 1. Iron (IIII) and copper (II) sulfate solution Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 2. Lead (II) nitrate and potassium iodide solutions Pour about 2.0 mL of lead (II) nitrate into the test tube
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Virtual Lab 1: Virtual Microscopy A. Estimate the size (length and width) of these microscopic objects in micrometers (microns): 1. An E. Coli cell. 3x 0.6 μm = 1.8 μm 2 A mitochondrion. 4x 0.8 μm = 3.2 μm 3. A Red blood cell. 8 μm 4. A virus. 220 nm = 0.00022 μm 5. A water molecule. 275 pm = 0.000275 μm B. 1 Describe three differences between prokaryotic and eukaryotic cells. The three differences between prokaryotic and eukaryotic cells are: Eukaryotic cells contain a nucleus inside
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I enjoyed doing the virtual lab. I treat water as an occupation so I understood how and what to add to treat the water. If you have a low (acidic) pH then you should add sodium hydroxide. If you have total coliforms‚ you should chlorinate before and after treatment. Often‚ we test houses for total coliforms and e. coli. If the bacteria is positive‚ then we chlorinate the well. After we make sure all the chlorine is throughout the house‚ we let it sit for 24 hours to disinfect the pipes and
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Ted Legdeto Mark Maguire 10/15/13 Period G Observation and Experiment Lab Objective: To make observations about the changes that occur when several substances are mixed and to design controlled experiments to identify the substances responsible for the observed changes. Materials: We did not use graduated cylinders or beakers. Apparatus Expendables Wash bottle Pen for labeling Jars or plastic cups‚ small‚ 2 Sealable‚ zipper-lock plastic bags‚ quart size‚ 6 Measuring spoons
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Isotopes and Atomic Mass It’s Vegium I. Purpose The purpose of this lab is to determine the average weights of each isotope of the “element” vegium‚ determine the relative abundance of isotopes of vegium‚ and calculate from experimental data the atomic mass of vegium. II. Apparatus Sample of vegium‚ balance‚ weighing cups III. Data Tables | |Beanium |Peaium |Cornium |Total
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Name: ___________Naomi Scharf___________________________ Date: 3/17/11________________________ Student Exploration: Boyle’s Law and Charles’ Law Vocabulary: absolute zero‚ Boyle’s law‚ Charles’ law‚ Kelvin scale‚ pressure Prior Knowledge Question (Do this BEFORE using the Gizmo.) A small helium tank measures about two feet (60 cm) high. Yet it can fill over 50 balloons! How can such a small tank contain enough helium to fill so many balloons? _The tank is compressing the helium into a denser
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Virtual Lab: Optimizing Photosynthesis Maria Diaz March 12‚2012 Pre-Lab Questions 1. Which two variables are controlled in a similar manner? The two variables that can be controlled in a similar manner are CO2 & the light level. 2. How can you get the results to the investigation faster? You can get the results to the investigation faster by adjusting the speed at the bottom of the water weed simulation. 3. How will you be able to determine the rate of photosynthesis
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TITLE Crime and Dye Lab Special Projects 1 Martin Enem LAB SECTION: BB2 INTRODUCTION Light is usually viewed as a result of the heating of a substance. The higher the temperature at which the substance is heated‚ the greater the vibrations that lead to certain light intensity given off by the molecule. It is this same theory that suggests why steel glows red hot when heated to high enough temperatures. The process of light emissions can also be induces through other means. 1 One
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D_____ J_____ CARBOHYDRATES LAB May 22‚ 2013 Pre-lab Questions 1. The water in test tube No. 1 is a negative control. No reaction is expected to occur because water is not a carbohydrate. Reaction by a negative control is evidence of contamination. 2. The color changes expected for positive test results are Benedict’s test: orange to brick red Tollen’s test: metallic silver Starch iodine test: blue-black 3. Identify each of the samples in Part 1 as monosaccharide
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