moles-stoichiometry-practice-problems Now you’re ready to use what you know about conversion factors to solve some stoichiometric problems in chemistry. Almost all stoichiometric problems can be solved in just four simple steps: 1.Balance the equation. 2.Convert units of a given substance to moles. 3.Using the mole ratio‚ calculate the moles of substance yielded by the reaction. 4.Convert moles of wanted substance to desired units. These "simple" steps probably look complicated at first
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COMPANY PROFILE About Eksons Corporation Berhad Incorporated in 1990‚ Eksons Corporation Bhd was listed on the Second Board of the Kuala Lumpur Stock Exchange (now Bursa Malaysia Securities Bhd). After a reverse takeover in April 2000‚ Eksons was subsequently promoted to the Main Board in February 2001. The Eksons Group specialises in the manufacturing of tropical thin plywood of less than 3.0 millimeter in thickness‚ particularly in the 2.5 and 2.7 millimeter categories. The plywood is sold under
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First the total volume of gas that is to be stored needs to be calculated. From the mass balance it is known that 30.92 kmol of methane can be expected every hour. This correlates to 742.0 kmol/day. The ideal gas law will be used‚ with a compressibility factor‚ Z‚ to account for departure for un-idealality. An operating temperature of 50 will be assumed‚ as this is the highest feasible ambient temperature that can be expected. Also assume that the pump or compressor used to transport the methane
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between molecules‚ as was HYPERLINK http//en.wikipedia.org/wiki/Isaac_NewtonIsaac Newtons conjecture‚ but due to HYPERLINK http//en.wikipedia.org/wiki/Collisioncollisions between molecules moving at different velocities. While the particles making up a gas are too small to be visible‚ the jittering motion of pollen grains or dust particles which can be seen under a microscope‚ known as HYPERLINK http//en.wikipedia.org/wiki/Brownian_motionBrownian motion‚ results directly from collisions between the particle
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Fundamental of Engineering Calculation 1. Determine the following unit conversions to SI units: a. Density value of 60 lbft3 to kgm3‚ Ans: 961.1 kg/m3 b. Energy value of 1.7 ×103Btu to kJ‚ Ans: 1.8 x 103 kJ c. Enthalpy value of 2475 BtulbtokJkg‚ Ans: 5756 kJ/kg d. Pressure value of 14.69 psig to kPa‚ Ans: 201.88 kPa e. Viscosity value of 20 cp to Pa∙s‚ Ans: 2 x 10-2 Pa∙s Table of Conversion Factor 1 lb | 0.454 kg |
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it is to determine its molecular weight. In order to determine the molecular weight of a particular substance which in this experiment’s case is a volatile liquid‚ the need to convert the liquid into a gas arises. The relation among the pressure‚ volume‚ temperature and the number of moles of a gas will be an important key in the conclusion of its molecular weight. However‚ in the process of vaporization‚ there is a possibility that some of the vaporized liquid will escape the flask and will be replaced
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ribbon into a small‚ tight bundle. Tie it with a piece of thread (10 to 15 cm long). 4. Add about 10 mL of 3.0M HCl to a gas collection tube. 5. Hold the gas collection tube at an angle as you fill it completely with tap water‚ until it is nearly overflowing. Holding the tube at an angle allows the air bubbles to escape. 6. Place the magnesium in the mouth of the gas collection tube so that it is about three cm below the surface of the water. Fold the thread extension over the side of the
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Types of ventilation - Induced draft ventilation – Turbine ‚Acc module - Positive ventilation- LGB‚ Exhaust Ventilation System Design features • Induced Draft Ventilation • Number of compartments • Accessory compartment • Turbine compartment • Aft compartment • Generator Enclosure • 2 X 100 % Roof mounted centrifugal fans • Auto change over • Fan outlet gravity dampers‚ CO2 dampers and silencers provided • Enclosure Air inlet hoods with filter panels • Slow cool down fan provided for Turbine
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contains aspirin (acetylsalicylic acid)‚ citric acid‚ and sodium bicarbonate. As the tablet dissolves in water‚ the bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained in the tablet. The carbon dioxide gas produced by the reaction is what causes the bubbling that can be observed. HCO3- (aq) + H+ (aq) → H2O (l) + CO2 (g) In this investigation‚ you will design two experiments which will compare two different factors that may affect the rate of the
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I) INTRODUCTION * Industrial Chemistry deals with the preparation of products from raw materials through the agency of chemical change * Chemistry is important to Industry by: * Regulating manufacturing processes * Quality Control * Research and Development * Sources of raw materials from the natural environment 1) Lithosphere –Earth’s Crust 2) Hydrosphere – Marine and Oceanic Environment 3) Atmosphere – Air 4) Plants – Biosphere * Classification of Natural
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