Ale_____ Ram___ 30 de noviembre de 2012 _______________ BIOL 3503 Ecología Laboratory #1: Communities and Biomes 1. List the fish and invertebrates you selected after the nitrogen cycling process. I personally selected a maroon clownfish with two anemones. I also chose 5 sergeant majors‚ 2 bleenies and a yellow tang. 2. What changes did you make to your reef tank during the 12 weeks and why did you make them? After I selected my fish‚ I noticed that the tank
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Analytical chemistry Analytical chemistry is the branch of chemistry that deals with the separation‚ identification and determination of components in a sample. Analytical chemistry can be divided into two branches‚ qualitative and quantitative. Qualitative analysis It deals with the identity of the constituents that are in an analytical sample. Quantitative analysis It deals with the determination of how much of a given substance is in the sample. The quantitative analyses are classified
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Katerina Baeza Hernandez | | | | | | | |Zn |Mg |Cu |Pb | | |(+) clear liquid but the |(+) a black spot appeared on|(-) no reaction occurred |(-) no reaction | |Pb(NO3)2
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Discussion: The experiment lacked a proper control - While the experiment could not answer the research question‚ this does not disprove the possibility for the choice of bread to affect blood glucose levels; the obtained results were simply not sufficient to prove a connection. This might be due to several reasons‚ but as the experiment lacked a control subject which the other values could have been compared to‚ the results are completely unusable. However‚ there is no consistency in the results
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Solution Data: Please write your observations about the appearance of the solution. 1. Normal Saline- The solution appeared clear at the start with slight particles showing‚ once adding the salt it still appeared clear. 2. Nasal Irrigation Saline- Solution appeared cloudy once adding the salt and baking soda‚ then it turned semi-clear about 30 secs later; it was more concentrated than the normal saline. Results: 1. Determine the molar mass of NaCl. Show the workup. Na= 23g/mole Cl= 35g/mole Molar
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Question 1 Points: 10 out of 10 This level of organization is the defining level of biology. As far as we know‚ life is an emergent property that exists at this level. Below this level‚ no single entity is truly alive. population cell CELL CELL CELL molecule organism Question 2 Points: 10 out of 10 Your aquarium contains three goldfish‚ one turtle‚ some plants‚ and millions of bacteria and algae. All those organisms together form a(n): Population Ecosystem
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does changing the temperature (°C) of glycerin affect the viscosity s -1 of glycerin (l)‚ when tested by dropping a marble from a constant height into the glycerin (l) and timed with a stopwatch until the marble hits the bottom? Design Independent Variable: The independent variable of this experiment is the temperature (°C) of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin (l). Controlled Variable(s): The controlled variable(s)
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1- What are three risk and threats of the user domain? Top risks are users and social engineering 2- Why do the organizations have acceptable use policies (AUPs)? The AUPs is very important to any organization. The organizations should have AUPs to a- Protect the organizations from any attack weather from inside or outside. The organization can do that by preventing the employees from downloading any services not needed that may be come with threat such as virus or any kind of malware.
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Sample Questions 1. In the chemical formula for ammonia‚ NH3‚ what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers? (a) atomic
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functional groups. 5 major functional groups easily identified by IR spectroscopy: 1. C=O 2. C–O 3. OH 4. Phenols 5. C–H Instrument details Type of spectrophotometer: Nicolet 380 FT-IR spectroscopy‚ Nicolet Avatar 360 & Thermo Scientific iS10 FT-IR Spectrometer Type of radiation source: Methods of Sample Preperation Initially the plates were rinsed with ethanol‚ then dried with lint0free tissues. Next 1-2 g of benzoic acid were transferred to a mortar and a pestle was then use to
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