Marybeth Brooks Physics Lab III Specific Heat Capacity Lab May 25‚ 2011 Abstract The specific heat capacity of various metals can be calculated and compared to accepted literature values. Dropping heated metal samples into a calorimeter filled with water and then measuring the change in the temperature of the system accomplished this. The metal samples were heated in a boiling water bath and were assumed to be at 100 C when they were removed. It was added to a calorimeter and stirrer
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Winter Survival Exercise Situation You have just crash landed somewhere in the woods of southern Manitoba or possibly northern Minnesota. It is 11:32 am in mid-January. The small plane in which you were travelling crashed onto a small lake. The pilot and co-pilot were killed. Shortly after the crash‚ the plane sank completely into the lake with the pilot and co-pilot’s bodies inside. Everyone else on the flight escaped to land dry and without serious injury. The crash came suddenly before the
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3A Task 1 Aim: the aim of the experiment is to find the best temperature to ferment yeast at. Hypothesis: the yeast will ferment the best at 60 degrees Celsius. Independent variable: the temperature of the water the yeast is put in to ferment. Dependent variable. The amount of air bubbles the yeast produces. Controlled variable: the amount of yeast and glucose in each syringe. Uncontrolled variables: human error in counting. Materials : Plastic soft drink bottle cut to size Marking pen
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Effect of pH on Enzyme Activity Athenaa Jeyachandran Mr.Menes Course Code January 21st‚ 2013 The Effect on Enzyme Activity Due to Temperatures Purpose: The purpose of this lab experiment is to examine how different temperatures affect enzyme activity using hydrogen peroxide. Hypothesis: My hypothesis for this experiment is that temperatures near body temperature is when enzyme activity will be at its highest. I believe this will occur because in our body‚ enzymes
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Elena Mesa Nov. 15‚ 2013 Ms. Lelacheur IB Biology HL The Effect of Temperature on Beet Root Membranes What is the affect of temperature on beetroot membranes? Hypothesis: It is hypothesized that as the temperature increases‚ the deeper red the beetroot water will be. At higher temperatures the proteins in the beetroot plasma membrane will denature‚ leaving holes in the membrane and allowing the red pigment in the cell sap to seep out into the water around it. Variables: Dependent-The
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Measuring the Speed of Sound and Air using a Pulse-Echo Technique Purpose To determine the speed of sound in air using the pulse-echo experiment procedure‚ and comparing it to the predicted speed of sound in air using the measured air temperature of the classroom. Hypothesis I believe that the speed of sound it the air will be close to that of the predicted value. According to our predicted value‚ we should expect the speed of sound in the air to be at a speed of approximately 346 m/s. Materials
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Name: Date: Graded Assignment Checkup: Applications of Logarithms Answer the following questions using what you ’ve learned from this lesson. Write your responses in the space provided‚ and turn the assignment in to your instructor. For 1 – 2‚ use the following situation: In 1991‚ the cost of mailing a 1 oz. first-class letter was 29 cents‚ and the inflation rate was 4.6%. If the inflation rate stayed constant‚ the function C(t) = .29(1.046)t would represent the cost of mailing a first-class
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Yeast Experiment – Temperature Yeast fermentation is affected by temperature as an outcome of the many different temperatures that yeasts are exposed to. The accepted value for yeasts optimum temperature is approximately 66.667 degrees Celsius. If yeast is exposed to their optimum temperature‚ then this would create the most amount of fermentation. In this experiment however‚ the yeast were exposed to temperatures below their optimum. The chemical reactions within yeast are facilitated by enzymes;
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Question 1(10 marks) Comment the following statements (a) The volume coefficient of thermal expansion of water is negative for temperatures in the range 0 to 4 °C. (b) The triple point of water‚ 0.01 °C‚ and 611.73 Pa‚ is one of the primary fixed points on the Kelvin absolute temperature scale. (c) The volume coefficient for the thermal expansion of a solid is twice the linear coefficient for thermal expansion. (d) A temperature of 26.85 °C is the same as 300 K. (e) The surface temperature
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101 Word Problems/Solutions Problem #1: Antifreeze A quart bottle contains a mixture that is 1/3 antifreeze‚ 2/3 water. A half gallon bottle contains a mixture that is 3/4 antifreeze‚ 1/4 water. The contents of the two bottles are poured into a gallon jug. What is the ratio (one integer to another‚ in the form a:b) of antifreeze to water in the jug? Solution #1: Antifreeze 11:7 Problem #2: Consecutive Birthdays A woman and her grandson have the same birthday. For six consecutive birthdays
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