Chemistry_Math_HW_11_A - using (a) the ideal gas equation...

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1. A sample of air occupies 2.8 L when the pressure is 1.9 atm. a. What volume does the sample occupy at 6.1 atm at the same temperature? b. What pressure is required in order to compress it to 0.033 L at the same temperature? 2. The pressure of 4.60 L of an ideal gas in a flexible container is decreased to one-third of its original pressure, and its absolute temperature is decreased by one-half. What is the final volume of the gas? 3. A gas sample occupying a volume of 22.5 mL at a pressure of 0.983 atm is allowed to expand at constant temperature until its pressure reaches 0.307 atm. What is its final volume? 4. Under constant-pressure conditions a sample of hydrogen gas initially at 99 degree C and 7.5 L is cooled until its final volume is 2.9 L. What is its final temperature? 5. The atmospheric pressure at the summit of Mount McKinley is 575 mmHg on a certain day. What is the pressure in atmosphere and in 6. Calculate the pressure exerted by 11.7 moles of neon gas in a volume of 5.85 L at 25 degree celcius
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Unformatted text preview: using (a) the ideal gas equation and (b) the van der Waals equation. (For neon, a= 0.211 atm.L^2/mol^2 and b= 0.0171 L/mol.) 7. What pressure (in atm) is exerted by a column of isopropanol (C3H7OH) 275 m high? The density of isopropanol is 0.785 g/cm^3. 8. A 2.77 L flask at 1 degree C contains a misture od N2, He, and Ne at partial pressures of 0.301 atm for N2, 0.167 atm for He, and 0.391 atm for Ne. a. Calculate the total pressure of the mixture. b. Calculate the volume in liters at STP occupied by He and Ne if the N2 is removed selectively. 10. What pressure would be required for Helium at 25 degree celcius to have the same density as argon at 25 degree celcius and 1.00 atm? 11. Calculate the density of helium in a helium balloon at 15.1 degree celcius. (Assume that the pressure inside the balloon is 1.07 atm.)...
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This note was uploaded on 10/20/2010 for the course CHEMISTRY Chemistry taught by Professor Marshall during the Fall '10 term at CUNY Queens.

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Chemistry_Math_HW_11_A - using (a) the ideal gas equation...

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