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- An empty oven with a volume of 0.150 m3and a temperature of 296 K is turned on. The oven is ventedso that the air pressure inside it is always the same as the air pressure of the environment. Initially, the airpressure is 1.00 × 105 Pa, but after the oven has warmed up to a final temperature of 453 K, theatmospheric air pressure has decreased to 9.50 × 104 Pa due to a change in weather conditions. Determinehow many moles of air leave the oven while it is heating up.Provided that a methane gas combust a 25 g, find the volume of O required under 298K and 0.21 atm?Suppose that a woman weighing 130 lb and wearing highheeledshoes momentarily places all her weight on the heelof one foot. If the area of the heel is 0.50 in.2, calculate thepressure exerted on the underlying surface in (a) pounds persquare inch, (b) kilopascals, and (c) atmospheres.
- https://www.youtube.com/watch?v=GpRqht0o4w4A natural-gas storage tank is a cylinder with a moveable topwhose volume can change only as its height changes. Its radiusremains fixed. The height of the cylinder is 22.6 m on a day whenthe temperature is 22°C. The next day the height of the cylinderincreases to 23.8 m when the gas expands because of a heatwave. Find the temperature on the second day, assuming that thepressure and amount of gas in the storage tank have not changed.A new flame atomic-absorption spectroscopic method of determining antimony in the atmospherewas compared with the recommended calorimetric method. For samples from an urbanatmosphere the following results were obtained: follow up question: Do the results obtained by the two methods differ significantly?
- A cyclinder fitted with a piston holds 8.07g CH4 in 7.05L at -8C. While heating the gas at 1.55atm, 366 of heat was added. What is the change in internal energy during the heating?Calculate the mean free path (in m) of Ar at 60oC and 0.7atm. the cross-section area is 0.36nm2. Please enter your answer using scientific notation with 3 significant figures, for example: 2.55E-10Give some examples of thermal expansion?
- The total pressure in a pressure cooker filled with waterincreases to 4.0 atm when it is heated, and this pressure ismaintained by the periodic operation of a relief valve. UseFigure 10.24c to estimate the temperature of the water inthe pressure cookerWhat would be the height of the column in a barometerif the external pressure was 101 kPa and water1d = 1.00 g>cm32 was used in place of mercury?(a) 0.0558 m (b) 0.760 m (c) 1.03 * 104 m(d) 10.3 m (e) 0.103 mThe following is the van Deemter Equation. Explain briefly the parameters A, B and C and how they affect the hight of the theoretical plate (H).
