Introduction In order to identify new materials‚ scientists use a variety of chemical and physical methods to determine molecular masses. One of these methods includes the Dumas method for determining the molecular weight of a volatile liquid. This method‚ which was proposed by John Dumas in 1826‚ makes use of a volatile liquid (vaporizes at a relatively low temperature) and allows this liquid to be heated in a water bath to a known temperature and escape from a flask through a tiny opening (Giunta
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Syllabus reference 9.3.2 1 Two identical gas flasks‚ A and B‚ are kept at the same temperature and pressure. Flask A contains 10 g of ethane gas‚ C2H6. Flask B contains sulfur dioxide gas‚ SO2. Calculate the mass of sulfur dioxide gas in flask B. moles ethane 10/30 0.33 mol moles SO2 0.33 mol mass SO2 0.33 64 21 g 2 What mass of nitric oxide‚ NO‚ is present in a 2.5 L flask at a pressure of 100 kPa and 0ºC? mole NO 2.5/22.71 0.1101 mol mass NO 0.1101 30 3.3 g 3 Carbon monoxide
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zVisit Piping Design Central: http://www.pipingdesign.com PIPING DESIGN QUESTIONAIRE Authors: Kumar Rudra‚ Rakesh Patil and Joshua Thinakaran Oil and Gas Special Projects - L&T‚ Mumbai - India Copyright 2002. All Rights reserved Simple 1. What is the ASME code followed for design of piping systems in Process pipings (Refineries & Chemical Industries)? (i) B31.1 (ii) B31.3 (iii) B31.5 (iv) B31.9 Answer (III) 2. What do you mean by following items? i.)ISLB-400 ii) ISMB-600 iii) ISHB-350 iv)
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College Pressure Students all over the world are facing different kinds of difficulties while their studies at university. Reasons for that can be very different from student to student. For example‚ pressure from parents‚ problems with financial situation or doing homework etc. For some students college pressure is too high and even unbearable sometimes. Parental pressure is an actual topic for students in all countries all over the world. For the centuries‚ parents are always trying to do good
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tube until the liquid level on the inside of the tube is the same as the outside. Record the volume of the hydrogen gas inside the gas collection tube. (Be sure to read the liquid level at eye level.) 12. Measure and record the temperature and pressure of the lab room. 13. Obtain the
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Pumps Selection‚ Operation & Maintenance Dr. M.F. Khalil Professor Mech. Eng. Dept. Alexandria University Alex.Eng.Society Short Course By MFKhalil 1 Pumps Function Classification Construction‚ Theory ‚ Operation & Applications Alex.Eng.Society Short Course By MFKhalil 2 Pump Pump is a mechanical device which • converts mechanical energy of its driving unit ( electric motor‚ diesel engine‚ steam turbine ‚gas turbine ‚wind turbine.. Etc.) to hydraulic energy .This hydraulic energy
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1802 - Gay-Lussac first formulated the law‚ Gay-Lussac’s Law‚ stating that if the mass and pressure of a gas are held constant then gas volume increases linearly as the temperature rises. This is sometimes written as V = k T‚ where k is a constant dependent on the type‚ mass‚ and pressure of the gas and T is temperature on an absolute scale. (In terms of the ideal gas law‚ k = n R / P.) ▪ 1804 - He and Jean-Baptiste Biot made a hot-air balloon ascent to a height of 6.4 kilometres in an early investigation
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the temperature at which the liquid in the tank is completely vaporized. Also‚ show the process on a T-v diagram with respect to saturation lines. (5 marks) 2. A 0.5 m3 vessel contains 10 kg of refrigerant-134a at -20oC. Determine (a) the pressure‚ (b) the total internal energy‚ and (c) the volume occupied by the liquid phase. (8 marks) 3. A tank whose volume is unknown is divided into two parts by a partition. One side of the tank contains 0.01 m3 of refrigerant-134a that is a saturated
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to the right‚ hence‚ the average number of collisions = ½ NAux(t - Total momentum change = ½ NAux (t x 2mux = mNAu2x (t - Rate of change of momentum = mNAu2x (By Newton’s second law it equals to the force = p/A) - Pressure = mNu2x - But the detected pressure is the average one‚ so p= mN<u2x> - [pic] - Particles are moving randomly‚ so speeds in x‚ y‚ z direction are all equal‚ then c = (3<u2x>)1/2‚ implying that <u2x> = 1/3 c2 - Therefore‚ p= 1/3 Nmc2
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Introduction to Design of Industrial Ventilation Systems Course No: D02-001 Credit: 2 PDH J. Paul Guyer‚ P.E.‚ R.A.‚ Fellow ASCE‚ Fellow AEI Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com An Introduction to Design of Industrial Ventilation Systems Guyer Partners 44240 Clubhouse Drive El Macero‚ CA 95618 (530)7758-6637 jpguyer@pacbell.net J. Paul Guyer‚ P.E.‚ R.A. Paul Guyer
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