4-nitroaniline had a percent recovery of 18.67% and naphthalene had a percent recovery of 80%. Naphthalene had a relatively high percent recovery‚ and the loss of product can be explained by error inherent. The low percent recovery of 4-nitroaniline is mainly due to the fact that anhydrous sodium sulfate was accidently added to the flask. Therefore‚ some product was lost as the aqueous solution with the protonated 4-nitroaniline reacted with the drying agent. However‚ more errors to explain the results
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Lab Questions Unit 4 1. Who were the Poor Clares? Why is it somewhat surprising that they were accomplished musicians? Poor Clares were nuns from a catholic church. It is surprising that they were skillful musicians because they secluded themselves in the church. So people didn’t know what they were doing. When they did come out it shocked everyone. 2. What is a chanson? A chanson is a French song. 3. What is the song "Five Knacks for Ladies" about? What type of song is it? The song is saying that
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GGS 103: Human Geography Summer Session A 2013 Instructor : Patricia Boudinot Email: pboudino@gmu.edu TA: Aaron Mulhollen Email: amulholl@masonlive.gmu.edu Virtual Office Hours: By appointment or Skype. I am available every day for student inquiries. I will respond to student inquiries within 24 hours Honor Code: “Students members of the George Mason University community pledge not to cheat‚ plagiarize‚ steal and/or lie in matters related to academic work.” In this course‚ you are not to:
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NT1210 Chapter 4 Lab 4.1.1 Why are standards so important for NICs‚ connectors‚ and media? Use your textbook and Internet research to justify your answer. Standards are put in place to make everything work together error free. Because Stability‚ Consistency‚ Minimization of packet errors. 4.1.2 The voltage for registering a bit of 1 on Ethernet can be as low as 2.5 volts or even 1 volt. Why is this so low when the capacity for transmitting electricity on the copper wire is so high? Use your
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103 Midterm Answer (Fall 09) Q1: 1a) Economic growth occurs when a country chooses to allocate some of its resources to the production of capital goods‚ instead of consumption goods. This expands the resource base‚ allowing the country to produce more goods and services thus furthering economic growth. Economic growth can also occur when more productive technology is used. Technology makes the production process more efficient so more goods and services can be produced without increasing the
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In this lab we used a solution of lactase to test the chemical and physiological properties of this particular enzyme and determined whether the lactase came from human cells or bacterial cells. In the statistical analysis statistical formulas and techniques are used to analyze the significance of a set of data and the validity of the conclusions made based on that data. These are some terms and definitions that will be crucial to understanding the validity of this experiment. An enzyme is a protein
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Experiments investigating the effect of a particular factor on an enzyme-catalysed reaction are commonly used as assessed practicals in Biology. The reason for this is there are a number of factors that can be investigated‚ and therefore‚ a number of factors that can also be controlled. From our lecture‚ we are aware that the following can affect the rate of reaction: 1) Temperature: a. Independent variable: A range of temperatures should be investigated‚ with particular attention
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1. Diffusion and Osmosis‚ June 4‚ 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis‚ which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer
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SPM Biology – Paper 3 (2003 – 2012) www.sureshkumarbio.wordpress.com 2003 Q1: To study the effect of camouflage on a predator-prey relationship [F4-Chapter 8] Q2: To study the relationship between the concentration of CO2 and the rate of photosynthesis [F4-Chapter 6] 2004 Q1; To determine the % of vitamin C in fruit juices using DCPIP solution [F4-Chapter 6] Q2: To estimate the size of the bird population [F4-Chapter 8] 2005 Q1: To determine and compare the energy content in white bread
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“The senses are points of contact with the environment." How does activity with sensorial materials encourage observation and perception of the environment? “It is through contact with and exploration of the environment‚ that the intelligence builds up its store of operational ideas without which its abstract functioning lacks both foundation and inspiration". (Montessori‚ The Discovery of the Child‚ pg. 151) _Sensorial Exercises are designed by Montessori to cover every quality that can be
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