deeper under severe conditions i.e. pressures and temperatures and using complex systems. These complex system and extreme conditions like in wide range of fluids‚ temperatures and pressures puts elastomeric sealing elements and the designer under lot of pressure. Problems with elastomeric seals in these critical applications can lead to small defects or catastrophic failure which could be very expensive or even danger to human life and the environment. In high pressure gas applications for example‚
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the paint is being fired. If velocity adjustment is necessary‚ Use a 5/32-inch allen wrench on the adjuster in the bottom of the vertical regulator‚ turn clockwise to increase the velocity/pressure‚ and counter-clockwise to decrease. Take three or four shots after every adjustment to allow the gas pressure inside the EnvyTM to stabilize. Adjust until the marker is firing consistently within the limits for the field where you are playing. For safety reasons‚ never adjust the EnvyTM to fire at
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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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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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involved and try to pressure you one way or another it can be even harder. People who are your age‚ like your classmates‚ are called peers. When they try to influence how you act‚ to get you to do something‚ it’s called peer pressure. It’s something everyone has to deal with‚ even adults. Maybe you want to do it‚ and you just don’t have the courage to do it and your friends talk you into it. Peer Pressure can be broken down into two areas‚ good peer pressure and bad peer pressure. When we think of
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1.According to the kinetic theory‚ both the particles in gases and the particles in liquids have kinetic energy. This energy allows the particles in gases and liquids to flow past one another‚ as shown in Figure 13.5. Substances that can flow are referred to as fluids. The ability of gases and liquids to flow allows them to conform to the shape of their containers. Figure 13.5 Both liquids and gases can flow. The liquid on the left is colored water. The gas on the right is bromine vapor. If a
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experimentally determine the Universal Gas Constant “R”. Amedeo Avogadro hypothesized that all gases of equal volume‚ temperature and pressure would contain equal amounts of moles. This idea that volume is directly proportional to moles sprung from other similar hypotheses. Robert Boyle found that pressure and volume are inversely proportional‚ meaning as pressure increases‚ volume decreases and visa versa. P1V1=P2V2
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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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push it home. • Make sure the bleed screw on the charging unit is closed‚ and then open the air bottle valve slowly. • Slowly fill the rifle to the maximum recommended charge pressure‚ and close the valve. Allow a few minutes for the pressure to settle. If necessary‚ repeat the procedure to top up the pressure in the gun • Quickly open the air bleed valve on the charging unit to allow the pressurised air in the hose to escape. • Pull the filling adaptor from the filling port. • Remember
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