Dry ice is a solid which is known as the solid format of carbon dioxide which is an odorless gas made by burning carbon henceforth the name .Carbon dioxide is what humans exhale and pants inhale. Dry ice is a very popular experimentation factor this is because of the name which come from the fact that dry ice doesn’t melt. The differences among standard frozen water ice is that the standard ice melts while dry ice on the other hand does not. Dry ice also maintains a very vibrant white color compared
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full of water and placed on a hot plate. The temperature and pressure were recorded every 5 seconds as the flask was heated. Chart 3: Sample Calculations Moles Of Hydrogen Gas Produced 0.029 g Mg/(24.31 g/mol) = 0.00119 mol Mg .00119 mol Mg = mol H2 .00119 mol H2 Partial Pressure Of Hydrogen Gas Total Pressure Change = 192.3 torr Vapor Pressure of Water = 17.55 torr
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of the substance under consideration without distinguishing whether a substance is an element ‚ a molecule or an ionic compound. These elements‚ molecules or ionic compound could be solid gas or liquid. The molar mass of gas or vapor could be measured if the gases obey the law of Ideal Gas . The mass of the gas is found under known temperature and pressure. Method/procedure To measure the unknown volatile liquid molar mass‚ the formal to be used is PV=nRT‚ n=PV/RT and MM=g/n The step helps
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phase state to another‚ or in other words‚ when it goes from either a solid to liquid or liquid to gas. The potential energy that is stored between molecules of the substance needs to be overcome by the kinetic energy of the motion of the particles before the substance can undergo the phase change. The temperature of a substance as heat is added to change the phase from the solid state to the gas state is shown below. Phase changes are indicated by flat regions where heat energy is used to overcome
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Variable- Independent- Amount of Catalase (Filter Paper) Dependent- Amount of Oxygen (kPa) Constant- Temperature in Fahrenheit‚ 2 Pipette of Hydrogen Peroxide‚ 0.8 Cm Filter Paper Punches Materials: * 6 Test Tubes * Vernier Gas Pressure * Sensor * Catalase * Filter Paper Punches * Beaker * Control Group * Test Subject * Safety Goggles * Dropper Pipette * Go Link Procedure- 1. Gather Your Materials Figure 2 2. Put
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variable is the amount (in mL) of CO2 gas produced by the yeast. The biotic factor in this experiment is what effect the concentration of the yeast has on its ability or inability to reproduce efficiently. The lab tests three different concentrations of the yeast: add 0.25 mL‚ 0.5 mL‚ or 1 mL of yeast suspension to the test tube. The independent variable is the amount of yeast concentration added and the dependent variable is the amount (in mL) of CO2 gas produced by the yeast. INTRODUCTION Yeast
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Establish the relationship between the volume of a gas and the temperature of a gas at constant pressure. Verify Charles’s law. BACKGROUND INFORMATION The volume of a gas at constant pressure increases when the temperature of the gas is raised. This observation was first made by Jacques A. C. Charles in 1787. A quantitative study did not follow‚ however‚ until 1802‚ when Joseph L. Gay’ Lussac determined the relationship between the volume of a gas and its temperature. The relationship between
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temperature of a gas is summartzed in Charles’law. This law states: at constant pressure‚ the volume of a particular sample of gas is directly proportional to the absolute temperature. Charles’ law may be expressed mathematically: V ". T (constant pressure) V = kT o‚ : T = k (constant pressure) (1) (2) where V is volume‚ T is Kelvin temperature‚ and k is a proportionality constant. dependent on the number of moles and the pressure of the gas. If the volume of the same sample of gas is measured at
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Heather Schnicker 26 October 2012 Experiment # 4 (Lab 3) Properties of Gases PURPOSE The purpose of this experiment was to investigate and identify the chemical properties of the gases tested. DATA Gas | FLAME REACTION | GLOWING SPLINT | LIMEWATER REACTION | BROMOTHYMOL BLUE REACTION | Hydrogen | NO REACTION | | | | Oxygen | | BURNED BRIGHTER | | | Hydrogen & Oxygen | QUICK FLAME BURST | | | | Carbon Dioxide | | PUT THE FIRE OUT | NO REACTION | TURNED
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After the Bhopal gas disaster in 1984‚ the Indian legislation governing safety and environment underwent significant changes.Specifically‚the factories Act was amended to assign the responsibility of the “occupier”‚who is legally responsible for the safety of the workplace and workers‚to the highest level of management in an organization. For a company this meant that one of the directors on the board had to be designated as “occupier”.The Environmental legislation also underwent changes ‚with the
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