COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED NOVEMBER 20‚ 2012 INTRODUCTION Heat is a form of energy that can be passed from an object with high temperature to an object with low temperature. The heat required to change the temperature of a substance by 1 K is called heat capacity. A calorimeter is a device commonly used to measure the amount of heat that may be produced or assimilated by the system. This device encloses a reaction inside
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Determination of a Rate Law and Temperature Dependence of a Rate Constant By Marvin Coleman March 7‚ 2011 Abstract: From the shown calculations & graphical analysis‚ the experimentally determined rate law is rate = K[I-].969 [H2O2].991 and the experimentally determined activation energy is 59.50 kJ/mole. Introduction: The rate of a reaction varies at different temperatures and reactant concentrations. In this experiment‚ the orders and dependence of the rate constant of the products
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cooling. Second the two most abundant greenhouse gases water vapor‚ and carbon dioxide both occur naturally. Third the earth is not the only planet that has had a change in temperature over the past few years‚ other planets have also had changing temperatures. I belief that global warming is caused by natural things and not humans. The first reason why I belief humans are not the cause of global warming is that the earth
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arranged with very large spaces and weak forces between them. Of the three(3) states of matter‚ the particles if a gas move the fastest and have the largest amount of energy. Changing states The state that a substance exists in depends on the temperature and pressure. Sublimation Sublimation is the process in which a substance changes from a solid to a gas or from a gas to a solid
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Dataset New Temperature in °C Temp Converted to Kelvin (add 273 to the °C) New Volume in mL Volume Converted to Liters (divide mL by 1000) 1 46 319 0 0 2 48 321 15 0.015 3 50 323 25 0.025 4 52 325 35 0.035 5 54 327 45 0.045 6 55 328 50 0.050 Graph: [10 points] Create a graph of your data for this part of the lab. You may use any graphing tool to create the graph‚ but be sure to follow common guidelines for creating a graph. Be sure to graph temperature in the unit
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Lab #1: Melting Points of Organic Compounds Report Form May 15‚ 2014 1. A “Melting Point Range” refers to the range of temperature at which a solid melts into its liquid state. 2. Pure compounds have narrow or ‘sharp’ melting point ranges‚ 1°C or less if the compound is very pure. A less pure compound exhibits a broader melting point range‚ between 3°C to 10°C as well as a depressed or lower range. 3. Crushing the sample allows for greater surface area-to-volume ratio of the powder‚ this
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thermometers are used for measuring human body temperature‚ with the tip of the thermometer being inserted either into the mouth under the tongue (oral or sub-lingual temperature)‚ under the armpit (axillary temperature)‚ or into the rectum via the anus (rectal temperature). CLASSIFICATION BY TECHNOLOGY Liquid-filled The traditional thermometer is a glass tube with a bulb at one end containing a liquid which expands in a uniform manner with temperature. The tube itself is narrow (capillary) and has
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1 Equipment and Materials PASPORT Xplorer GLX Fast-Response Temperature Probe (included with GLX) Basic Calorimetry Set (1 calorimeter cup) Balance Water‚ about 15 degrees warmer than room temperature Ice‚ crushed Towel Part Number PS-2002 PS-2135 TD-8557 SE-8723 Purpose The purpose of this activity is to determine the amount of thermal energy needed to change a specific quantity of ice (one gram) into water at a specific temperature (0º C). This amount of thermal energy is called the Latent Heat
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THE SWORD Effects of Temperature on Amylase Activity ABSTRACT: The aim of this EEI was to test the effects of temperature on the activity of the enzyme Amylase. Solutions of starch and amylase were held at selected temperatures by various methods of temperature control. Once the solutions reached and maintained the desired temperature they were combined. Samples at timed intervals were then taken and reacted with a reagent to determine the effect the selected temperatures had on the reaction
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Did you know that if sea levels rise 63cm‚ 130 million people will be flooded per year due to the low lying islands and coastal communities? That our own Great Barrier Reef is already experiencing bleaching due to the 0.4 degree increase in water temperature? Need I go on? We need to stand together as a nation and embrace the fact that climate change is real and needs to be laid to rest with the help of the world to ensure the prosperity of our planet for future generations. Firstly I can’t emphasize
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