Has on Primary Productivity Research Question: How does the amount of salinity in the water affect gross primary productivity? Hypothesis: The higher the salinity content in the water the lower the gross primary productivity values. Variables: Control- The group with zero salt added. Dependent- Dissolved oxygen reading. Independent- The salt concentration in the water. Introduction: On the surface waters of lakes and oceans‚ plants are mainly unicellular algae‚ and most consumers are microscopic
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technique is: Number Moles Concentrated Solution = Number Moles Dilute Solution. An instrument called a spectrophotometer detects the amount of light that passes through the sample and the percent transmittance can be recorded from the meter. In the lab‚ multiple homogeneous solutions are made. There was not a way to determine the differences in concentrations‚ but the Spec 20 made it possible to measure the difference. The Beer-Lambert Law is a graph used to record
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Introduction The aims of the lab session was to familiarize with the principles‚ operation and application of a light spectrophotometer. This report discusses an experiment to study the relationship of absorbance and concentration‚ the interaction of electromagnetic radiant energy(ERE) and matter which is an important aspect of the Beer-Lambert ’s Law. This law states that the absorption of a compound is directly proportional to the concentration of that particular compound. This is because (a &
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Mount Etna 10‚922Ft (3329 meters) LOCATED IN ITALY : 37.73°N 15.00°E LAST ERRUPTED IN January 12‚ 2011 Mount Etna is one of the most active volcanoes in the world and is in an almost constant state of activity. Due to its history of recent activity and nearby population‚ Mount Etna has been designated a Decade Volcano by the United Nations. From about 35‚000 to 15‚000 years ago‚ Etna experienced some highly explosive eruptions‚ generating large pyroclastic
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Lab Report Density Name: Period: Problem How do you calculate Density? What units did you use for volume‚ mass‚ and density? When the cubes are placed in water which one will sink 1st? What is the ranking of the cubes lightest (1) to heaviest (10)? Is it true that the cube with the most mass will have the most density? Hypothesis I think the 1st cube was aluminum I think the 2nd cube was steel I think the 3rd cube was brass I think the 4th cube was copper I think the 5th
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cilia beat rates. This experiment took two cigarettes; one with a paper filter‚ and the other with charcoal filter. By taking mollusk gills and placing them in contaminated water from the two different smokes it could be seen that the cilia on the gills had a slower beat rate then cilia that were not in the contaminated water. This supported the hypothesis that smoking will inhibit the ciliary action and lower the quality filter the greater affect will be exhibited by the effected cilia.
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FDA. This "approval" process‚ known as color additive certification‚ assures the safety‚ quality‚ consistency and strength of the color additive. Color additives are available for use in food as either "dyes" or "lakes". Dyes dissolve in water‚ lakes are the water insoluble form of the dye‚ are more stable than dyes‚ and are ideal for coloring products containing fats and oils. Allura Red AC is a red azo dye that goes by several names including: Allura Red‚ FD&C Red 40 and disodium 6-hydroxy-5-
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heat content”. In this experiment‚ a certain amount of hot water‚ at a particular temperature‚ is poured into the calorimeter containing tap water of known mass and initial temperature (Hubsch‚ 2001). The equilibrium temperature is then measured and the mass of the whole mixture is measured. For part B‚ solid specimen shots of known mass were mixed with the tap water of known temperature in the calorimeter and a certain amount of hot water of known temperature is added. The equilibrium temperature
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Ketchup Lab Report Problem: People visiting fast food restaurants complained that ketchup was dripping onto their fingers and clothes. What could we do to insure that the ketchup will not drop all over the customers? Hypothesis: If I put one ketchup packet in a hotter bath then it will move faster down the styrofoam plate. Independent Variable: The temperature Dependent Variable: The viscosity of the ketchup’s “runniness” Constants: The type of ketchup
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“Demonstrating the Importance of Surfactant: Lab Report” Introduction Surfactant is an essential component for the respiratory system to function properly. This experiment was administrated to help us understand better the role of surfactant in the alveolar system. Surfactant is a detergent-like substance produced by the Type II alveolar cells in the alveoli. Surfactant is produced to make it easier for people to breath by reducing the surface tension of the water molecules that primarily compose the
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