I O N B Answer at least TWO (2) Questions from this Section 4. (a) (i) What is an ideal gas? (2 marks) (ii) Write the ideal gas equation and give the units used for each term in the equation when R = 0.0821L-atm/mol-K. (3 marks) (b) Why was this equation modified and what is the modified form of the equation? (5 marks) (c) Calculate‚ using the modified equation‚ the pressure at which one mole of chlorine gas will occupy 22400 cm3 at 0oC. (For chlorine‚ a = 6.49 L2-atm/mol and b = 0.0562L/mol
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theory to explain the following: i)Matter can exist in three states ii)The pressure exerted by a confined gas decreases as its temperature is lowered iii)A gas of low molecular mass will diffuse through air faster than a gas of high molecular masseven though both are at same temperature. The Kinetic Theory can be used to describe the three physical states of matter namely‚ solid‚ liquid and gas. In this theory‚ some basic assumptions has to be made: a) all matter is made up of extremely small particles
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Topic 1.2 AMOUNT OF SUBSTANCE The mole Reacting masses and atom economy Solutions and titrations The ideal gas equation Empirical and molecular formulae Ionic equations Mill Hill County High School THE MOLE Since atoms are so small‚ any sensible laboratory quantity of substance must contain a huge number of atoms: 1 litre of water contains 3.3 x 1025 molecules. 1 gram of magnesium contains 2.5 x 1022 atoms. 100 cm3 of oxygen contains 2.5 x
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projected problems and requests your assistance on the particular one described below. Decades from now‚ the present method of supplying energy to households (i.e.‚ with electricity‚ gas‚ or o11) may not be possible. Instead‚ housepersons will shop for their energy in supermarkets (Figure P4.5). Cyhnders of gas (let us ? +llh ’ I Figure P4.5 assume that the cylinders contain air) may be purchased and connected to any number of Carnot engines or other such efficient devices to be
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pieces of ham and 20 pieces of bread? 20B x 1S = 10S 21H x 1S=7S 2B 3H The smaller of answer from the 2 givens is the answer. The reactant that produced the smaller amount is called the limiting reactant. (in this case‚ ham) Part IV: Gas Laws
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S53718/7 © UCLES 2004 [Turn over 2 Data speed of light in free space‚ permeability of free space‚ permittivity of free space‚ elementary charge‚ the Planck constant‚ unified atomic mass constant‚ rest mass of electron‚ rest mass of proton‚ molar gas constant‚ the Avogadro constant‚ the Boltzmann constant‚ gravitational constant‚ acceleration of free fall‚ c = 3.00 × 10 8 m s –1 0 0 =4 × 10 –7 H m–1 = 8.85 × 10 –12 F m–1 e = 1.60 × 10 –19 C h = 6.63 × 10 –34 J s u = 1.66 × 10 –27 kg
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thermal equilibrium with the surroundings‚ which are at 15oC. Determine the final pressure in the tank. (4 marks) Figure 1 5. Nitrogen at 150 K has a specific volume of 0.041884 m3/kg. Determine the pressure of the nitrogen‚ using (a) the ideal gas equation and (b) the Beattie-Bridgeman equation. Compare your results to the experimental value of 1000 kPa. (9 marks) Date of submission: 19th October 2011 (EH2211A)/20th October 2011
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CN3135 Process Safety Health and Environment Summary Notes References based on Chemical Process Safety: Fundamentals with Applications (International Edition) 3rd Edition. Daniel A. Crowl‚ Joseph F. Louvar Tables and Figures are retrieved from the 2nd Edition Chapter 1: Introduction Safety or loss prevention: identification and elimination of hazards before accident occur Hazard: chemical or physical condition that has potential to cause damage to people‚ property and environment. Risk: measure of
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Concepts The gas laws developed by Boyle‚ Charles‚ and Gay-Lussac are based upon empirical observations and describe the behavior of a gas in macroscopic terms‚ that is‚ in terms of properties that a person can directly observe and experience. An alternative approach to understanding the behavior of a gas is to begin with the atomic theory‚ which states that all substances are composed of a large number of very small particles (molecules or atoms). In principle‚ the observable properties of gas (pressure
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release of white gas could be observed due to the reaction. The gas release caused animated fizzing. Temperature of boiling tube increases significantly‚ thus we can consider the reaction as being an exothermic reaction. Temperature gradually decreases. The solution is clear and colourless ‚ with no traces of the Mg strip. Data Processing: PV = nRT P; Pressure - Pa V; Volume - m3 n; Number of moles - moles R; Gas Constant - JK-1mol-1 T; Temperature - K Gas Constant (R) is
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