Module 1: Lesson 5 ASSIGNMENT (12 marks) Lesson 5 Assignment Part 1: Molar Heat Calculations (3 marks) 1. Calculate the molar enthalpy of the NaOH(aq) using the data obtained from this experiment. Show all your work. Answer: Specific heat capacity: 4.19 J/g∙°C 50.0 ml of 1.0 mol/L NAOH Initial temperature: 23.9 °C Final temperature: 32.9 °C Change in temperature: 9 °C Q = mc∆t = (80g)(4.19 J/g∙°C)(9°C) = 3016.8 J or 3.0168 kJ ∆rH = n∆rHm 3.0168 kJ = (0.05
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Aim: i) To find the relationship between supplied energy and change in temperature of water. ii) To find the specific heat capacity (SHC) of water. Hypothesis: As time increases so does the temperature since the water is exposed to the heated wire for a longer period of time. Variables: The Dependent Variable is the temperature of the water‚ and since the Energy is calculated using temperature it is a dependent variable as well. The constant variables are the voltage and current. Theory:
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based upon an energy analysis that takes into account all the modes of energy loss (L) from the body‚ including: the convection and radiant heat loss from the outer surface of the clothing‚ the heat loss by water vapour diffusion through the skin‚ the heat loss by evaporation of sweat from the skin surface‚ the latent and dry respiration heat loss and the heat transfer from the skin to the outer surface of the clothing. The model assumes that the person is thermally at steady state with his environment
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Introduction This essay will focus on heat stress in different working environment. I will first summarize the news that related to occupational health. Then‚ a brief discussion about the general work space will be written. Afterward‚ an in-depth exploration on the occupational health issue (Heat Stress) will be conducted. At least personal perception and conclusion will be written. Summary of News An industrial accident happened in a transportation container at Yau Ma Tei Fruit Market on 4th
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create suspense in “August Heat”.Horror stories are designed to make our pulse race or skin tingle. They often revolve around mayhem and nightmare with death evil and demonic subjects revolve around horror stories. The horror genre has its roots in folktales and traditional tales but it did not truly blossom until the 19 century . All good horror stories feature a great deal of suspense. Suspense is the uncertainty or anxiety feeling about what will happen next. In august heat harvey uses different methods
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Specific Heat Lab Report “Here are the facts we confront; No one is against conservation. No one is against alternative fuel sources.” – J. D. Hayworth Research Question: Does the number of hydrocarbons that a fuel is composed of affect how much it will ignite? If so‚ consider the following: What is the quantity and concentration of the combustion that is released and how can that be measured in other (more coherent) means? These are the fuels that were seasoned throughout the
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Heat exhaustion: This condition often occurs when people exercise in a hot‚ humid place and body fluids are lost through sweating‚ causing dehydration and overheating of the body. Temperature may be elevated‚ but not above 104 F (40 C). Occurs when not well adjusted to heat exercise. At high temperatures‚ the body cools itself largely through evaporation of sweat. When humid‚ this mechanism does not work properly. Body loses a electrolytes. When this is accompanied by an inadequate replacement of
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Nathan Christianson November 19‚ 2009 Comparing and Contrasting In the Heat of the Night The novel‚ In the Heat of the Night‚ and the movie based on the novel‚ had a lot of differences and some similarities which changed the effect of the movie if you read the novel. The theme of this story is racism and was portrayed in different ways in the movie and the novel‚ but both had
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Effect of Heat on Vitamin C Objective: - To determine whether the concentration of Vitamin C in a fruit juice changes upon heating at a constant temperature for different periods of time. - To investigate how the trend goes (whether the concentration of Vitamin C increases or decreases) if the amount of Vitamin C does change. Theory: - Hypothesis: The concentration of Vitamin C in the fruit juice changes and decreases upon heatingat a constant temperature for increasing periods of time
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In The Heat Of The Night Racism and inequality between nationalities was a major part of the late 1800s and early 1900s. This ignorance has lead to many problems including slavery‚ segregation and modern racism. In The Heat Of The Night‚ a novel written by John Ball‚ explores the world of Sam Wood. Sam wood has been taught racism his entire life and when a murder occurs and an African American man could possibly be the culprit‚ he jumps to conclusions. Throughout the novel‚ Sam Wood learns and
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