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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OPTION A - SIGHT AND WAVE PHENOMENA 1. Standing (or stationary) waves Formation of standing waves : When two identical waves travel along a string in opposite directions (ex : flick a rope attached at the other end)‚ they will superpose and create a standing wave (use animation to visualize what happens). Nodes‚ antinodes. Differences between progressive and standing waves : Wave profile doesn’t progress ; All points between two nodes are in phase (they all reach their maximum at the
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Title: Specific Heat of Solids II. Object: To determine the specific heat capacity of solids by methods of mixtures. III. Theory: When to or more substances at different temperatures are mixed‚ heat will flow from the substance of higher temperature to the substance of lower temperature. The heat flow will continue until equilibrium in temperature is reached. From the Law of Conservation of Energy‚ whatever amount of heat is lost by the hot substance must be equal to the heat gained by the cold
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As Canadians‚ we love the summer heat. We bask in it. We frolic in it. Then‚ we complain about it. It’s true. However‚ this week‚ every single complaint made about the weather is warranted because this heat wave is downright ridiculous. Ridiculous! With that being said‚ raise your hand if you leave your home in the morning with perfect make-up and five minutes later‚ you resemble a female version of Alice Cooper. You and me both. Don’t worry – we have you covered with these 5 simple steps on how
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6 report Anita Dey Thursday 8am Abstract: We recently performed a liquid nitrogen experiment in finding the Latent heat of the substance. We isolated two parts of the experiment in order to find out how much evaporation of the liquid nitrogen was from the surroundings B and how much evaporation from the electricity G. 1. When a substance is undergoing a phase transition‚ more heat (energy) is being added to the Substance but its temperature (a way of measuring its energy) is not changing. Where
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Medicine in Sport (2008) 11‚ 6—19 REVIEW Heat stress and strain in exercise and sport John R. Brotherhood The University of Sydney‚ Exercise and Sport Science‚ Faculty of Health Sciences‚ Australia Received 3 May 2007 ; received in revised form 27 August 2007; accepted 28 August 2007 KEYWORDS Heat stress in sport; Exercise thermoregulation; Rational analysis of heat stress; WBGT; Risk assessment for exertional heat illness Summary Heat stress arising from the thermal environment is of
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State Heat Transfer laboratory were to study the rates of heat transfer for different materials of varying sizes‚ to develop an understanding of the concepts of forced and free convection and to determine the heat transfer coefficients for several rods. These objectives were met by heating several rods and allowing them to cool through free convection in air‚ free convection in water and forced convection in water- while monitoring their change in temperature over change in time. Seven heat transfer
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Module name: Physical Chemistry (CP 4117) Experiment: Heat of decomposition of hydrogen peroxide Lecturer: Dr Cheow Name: Loganathan Admin number: 1246102 Contents No. | Contents | Page | 1 | Abstract – a precise summary about the whole experiment and report. | 3 | 2 | Introduction to the experiment - a brief outline and relevant theory for the experiment and calculation | 3-4 | 3 | Procedure for the experiment
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Forced Convection Heat Transfer I. Introduction This laboratory deals with forced convection‚ forced convection can be considered as a staple of heat transfer. That is to say that forced convection can be found in almost any heat transfer problem‚ and thus understanding its importance and how it affects a given problem is one of the more important learning objectives/outcomes of heat transfer. When dealing with forced convection the most important section‚ after understanding how convection
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HEAT ENGINE WORKING CYCLES An engine is a device which transforms one form of energy into another form. However‚ while transforming energy from one form to another form‚ the efficiency of conversion plays an important role. Normally‚ most of the engines convert thermal energy to mechanical work and therefore they are called ‘heat engines’. Heat engine is a device which transforms the chemical energy of a fuel into thermal energy and utilizes this thermal energy to perform useful work. Depending
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