Experiment 12: Calorimetry and Hess’s Law Purpose: The purpose of this lab is to determine the enthalpy of reaction for the burning of one mole of magnesium in oxygen. Although the reaction is exothermic‚ the ∆HRXN will be determined by using calorimetry and then using Hess’s Law to manipulate the data collected to yield the answer needed. Procedures: Dillon‚ Stephanie. “ Calorimetry and Hess’s Law.” Laboratory Manual. Pearson Publishing‚ 2012‚ pp.168-177. Data and Results Part A
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reliability. This will ensure that all data collected and measured in the lab are accurate and reliable as well. The process of testing an instrument’s accuracy is known as calibration. The purpose of this lab was to calibrate a variety of equipment frequently utilized in the Exercise Physiology lab and to become familiar with the operation of the calibrated equipment (Lab manual). The equipment calibrated in the exercise physiology lab was the speed of the Parvo treadmill‚ the incline of the Cosmed treadmill
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fork Okazaki fragments are the short lengths of DNA formed between RNA primers on the lagging strand Ligase is the linking enzyme that seals breaks in the DNA by creating a phosphate-sugar bond. DNA ligase has three (3) main functions: 1. joining Okazaki fragments‚ 2. sealing repairs‚ 3. sealing recombination fragments Diagram of Role of DNA Ligase in DNA Replication Role of mRNA in Transcription & Translation mRNA “copies” the message or the information
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devices. It’s also important because it allows for minimal errors and mistakes that could‚ if not‚ contribute wrong readings and conclusions. In testing for the calibration of speed‚ the values in trial 1‚ 2 and 3 were very similar to the adjusted level of speed on the treadmill. The speed level in trial 1 was 1.0 mph‚ which yielded a measured value of 1.06 mi/hr. Trial 2 was 3.0 mph‚ which yielded 3.2 mi/hr and tiral 3 was 4.0 mph‚ which yielded 4.3 mi/hr. Although the measured values yielded a few points
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energy required for that reaction. The enzyme is unaltered at the completion of the reaction. In this stimulation the amount of product produced during the course of an enzymatic product produced during the course of an enzymatic reaction will be measured. Hypothesis 1: What is the estimate optimal of ph? Hypothesis 2: What is the estimate optimal of temperature? Hypothesis 3: How does the concentration of enzyme influence the rate of reaction? Why do you think this occurs? Materials ● ● ● ● ● ● ● Substrate solution
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Kathryn Marchessault Physics Lab LR Tuesday 8-9:55 Due 02/26/15 Experiment #1 Free Fall Experiment Abstract In this experiment we studied the motion of an object in free fall‚ that is an object being dropped from a certain height to Earth’s surface. In this experiment we tested the idea that no matter what the size‚ shape‚ color‚ etc. of the object if it would still experience the same constant acceleration throughout its fall (short distance). The constant downward acceleration it experiences
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Name Mole Lab Exercises I. Pre Lab Questions Answer the following questions. (Hint: Your textbook will be helpful.) 1. ‘s number is the number of carbon atoms that are present in 12 g of 12C. 2. How many molecules of a compound are in one mole of that compound? 3. Write out the formula for finding percent by mass. 4. Write out the formula for finding Molarity. 5. The Formula Weight of a compound is equal to mole of that compound.
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In Graph 1‚ each line of color represents a different level of pH added to the solution. When pH 9 was added‚ it produced the highest rate of reaction (the most oxygen was produced)‚ whereas when the more acidic pH 5 was added‚ the rate of reaction was much slower‚ and less efficient. The higher the oxygen evolved (gas produced)‚ the more reactions were being produced/higher rate of reaction. Different types of enzymes’ reaction proportions differ based on the pH being added. For example‚ intestinal
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Date report submitted: June 18‚ 2015 Title: Lab Techniques and Measurements PURPOSE: The purpose of this experiment is for the students to get a better knowledge with the laboratory tools and techniques. This experiment taught me how to convert between SI units and standard American units of mass‚ length‚ temperature‚ volume and time as well as how to measure the units. Students become proficient in laboratory techniques such as measuring temperature and volume and calculating within them. Procedure:
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Homeostasis and Exercise Lab Living Environment/Lab #7 Ms. Iadanza December 2012 Problem: How does exercise affect a person’s heart rate‚ breathing rate‚ and perspiration level? Background Information: Homeostasis is the maintaining of a balanced condition in the body despite changing external conditions or demands on the body. The circulatory system works with the respiratory system in order to deliver nutrients to the body’s cells. The respiratory system is made of the mouth and
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