Organic Lab 2 February 14‚ 2009 Experiment 4: Borohydride Reduction of 2-Methylcyclohexanone Introduction: When learning about reduction reactions‚ we know that the addition of nucleophilic hydride anion (H-) to the carbonyl group will in turn result in the reduction of aldehydes to primary alcohols. Borohydride‚ and Lithuim aluminum hydride are commonly used as reducing agents. We can note that both of these reagents have a (H-) anion‚ hence it will be a powerful base and also take the
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NETW410 Week 2 Lab Report To complete the Week 2 Lab Report‚ answer the questions below concerning the Network Design Lab Scenario found in Doc Sharing. Please use the template starting on page 2 and submit it to the Week 2 iLab Dropbox by the due date. Have fun while learning. NETW410‚ 1/12/2013 Lab 2: Application of the Top Down Network Design Methodology Lab Report 1. What are the business goals? (10 points) The business goals are to implement a new network that is able to
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Data Table 2: Temperature measurements. Water Temperature (°C) Temperature (°F) Temperature (K) Hot from tap 42c 107.6f 315 k Boiling 99 c 210.0 f 372 k Boiling for 5 minutes 100 c 212 f 373 k Cold from tap 18 c 64.4 f 291 k Ice water – 1 minute 10 c 50 f 283 k Ice water – 5 minutes 5 c 41 f 278 k Data Table 3: Mass measurements Object Estimated Mass (g) Actual Mass (g) Actual mass (kg) Pen or pencil 5g 5.1 g .0051 kg 3 Pennies 9g 8.1 g .0081 kg 1 Quarter 5g 5.6 g .0056 kg 2 Quarters‚
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Predictions Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases contraction force increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: increases. Materials and Methods Measurement of Threshold Stimulus 1. Dependent Variable contraction force 2. Independent Variable stimulation voltage 3. Controlled Variables muscle fiber length; frequency of stimulation; temperature Effect of Muscle Length on Contraction
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ASSIENMENT [2] METAL FORMING REVIEW QUESTIONS 1- What are the differences between bulk deformation processes and sheet metal processes? Answer. In bulk deformation‚ the shape changes are significant‚ and the work parts have a low area-to-volume ratio. In sheet metal processes‚ the area-to-volume ratio is high. 2- Extrusion is a fundamental shaping process. Describe it. Answer. Extrusion is a compression process in which the work material is forced to flow through a die orifice‚ thereby forcing
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Lessig Activity 1 The Muscle Twitch and the Latent Period 1. 1. Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period 2. What .is the role of acetylcholine in a skeletal muscle contraction? Skeletal muscle fiber-Skeletal muscle fibers are the individual cells that are bound together in fascicles. Many fascicles are bound together to make a muscle Motor unit-A motor unit consists of a motor neuron and all of the muscle fibers in innervates
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the parietal lobe and makes up four distinct fields or regions known as Brodmann area 3a‚ 3b‚ 1‚ and 2. Central sulcus Occipital lobe Temporal lobe Midbrain Pons Medulla oblongata Spinal cord Conclusion 1 The gyri and sulci on the brain greatly increase the brain’s surface area. How do you think this increase in surface area relates to improved brain function? 2 Can you think of another organ in the human body that is shaped specifically to increase surface area
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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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EXPERIMENT 2 Measurement of g: Use of a simple pendulum OBJECTIVE: To measure the acceleration due to gravity using a simple pendulum. Textbook reference: pp10-15 INTRODUCTION: Many things in nature wiggle in a periodic fashion. That is‚ they vibrate. One such example is a simple pendulum. If we suspend a mass at the end of a piece of string‚ we have a simple pendulum. Here‚ the to and fro motion represents a periodic motion used in times past to control the motion of grandfather and cuckoo
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progress billings and payments of $1‚240‚000 each quarter. The total contract price is $14‚880‚000 and Seasons estimates total costs of $14‚200‚000. Seasons estimates that the building will take 3 years to complete‚ and commences construction on January 2‚ 2014. 1. At December 31‚ 2014‚ Seasons estimates that it is 30% complete with the construction‚ based on costs incurred. What is the total amount of Revenue from Long-Term Contracts recognized for 2014 and what is the balance in the Accounts Receivable
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