Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell‚ Color‚ Etc.) Beaker Observations 1 The water is clear with no distinct smell. 2 The vegetable oil does not mix with the water. Oil on top‚ separated from the water. Oil has a slight yellow look to it. No odor. 3 Vinegar mixes with the water and retains clarity. Has a slight smell of vinegar to it. 4 Laundry detergent changes the water’s clarity to a blue-green color. It has
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Qualitative Analysis Lab Report Organic Chemistry Laboratory II ABSTRACT: The purpose of this lab was to separate and purify two unknown compounds‚ one solid and one liquid‚ from an ethereal solution using the techniques of chemically active extraction‚ vacuum filtration‚ simple distillation‚ and recrystallization. Then identifying information was compiled about these unknowns by obtaining experimental melting/boiling point ranges‚ and analyzing IR and proton/carbon NMR spectrums It was determined
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DATA TABLE 2: Temperature Measurements Water Temperature (*C) Temperature (*F) Temperature (*K) Hot from tap 44*C 111.2*F 317.1*K Boiling 90*C 194*F 363.1*K Boling for 5 minutes 96*C 204.8*F 369.1*K Cold from tap 27*C 80.6*F 300.0*K Ice Water- 1 minute 11*C 51.8*F 284.1*K Ice Water- 5 minute 7*C 44.6*F 280.1*K DATA TABLE 3: Mass Measurements. Object Estimated Mass (g) Actual Mass (g) Actual mass (kg) Pen or Pencil 5g 5.3g .0053kg 3 Pennies 7.5g 8.1g .0081kg 1 Quarter 5.5g 5.7g .0057kg 2 Quarters
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Osmosis/Plasmolysis Lab Name: Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Materials: (per student group): red onion epidermis forceps‚ dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells‚ switch to high power. Make a labeled drawing
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Materials Small objects‚ such as pennies‚ pop-it beads‚ paper clips‚ bingo chips‚ etc.‚ 60 Beakers or other large containers‚ 2 Safety Precautions Although this activity is considered nonhazardous‚ observe all normal laboratory safety guidelines. Overview of the Activity 1. Each member of the group chooses a defined role: (a) reactant‚ (b) product‚ (c) monitor‚ and (d) recorder. 2. Obtain a counted set of 60 small pennies. These will be used to represent reactants and products in a chemical reaction
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The chloride shift is basically an exchange of chloride ions through the capillaries of the system circuit. In the blood plasma‚ there is large amount of carbonic acid and when there is an increase in carbonic acid than the balance of hydrogen ions and carbonate ions dissociate to maintain a balance of homeostasis in the pH of the blood. The red blood cells help to maintain this system by buffering the system of carbonic acid and causing detachment of the above ions. The release and detachment is
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SCI203 Phase 2 Lab Report SPECIATION Sharon Patton June 1‚ 2015 Colorado Technical University Purpose The purpose of this lab is to explain what would happen if a species were split into two groups by an earthquake‚ creating a physical barrier between the two groups. Showing how the formation of a new species can evolve. Introduction Speciation is when a species is created from the splitting of a species. In other words if a group of a certain species is separated say by an earthquake
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How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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differential voltage at zero. The output of the op-amp will be the product of input voltage and the gain set by the feedback. A commonly used op-amp is A741 with the pin diagram and symbol as shown below: 1 – Offset null 1 5 – Offset null 2 2 – Inverting input 6 – Output 3 – Non-inverting input 7 – Positive DC supply 4 – Negative DC Supply 8 – Not connected OVERVIEW Part A: Measurement of offset parameters The circuit configuration was constructed as shown in Figure 1‚ which VCC
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Unit 2 Research Paper 1: Experiment A problem that I think needs to be solved is traffic lights causing the back up of traffic. Traffic lights cause a delay in traffic and cause for traffic back up. It causes everyone to be late when there is no need for it. From personal experience I have been late of several occasions due to backed up traffic because of traffic lights. There are certain spots where traffic lights are not needed and they are only backing up traffic more than needed. Traffic lights
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