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- One process for decaffeinating coffee uses carbon dioxide ( M=44.0 g/mol) at a molar density of about 14,0 mol/m3 and a temperature of about 60 . (a) Is CO2 a solid, liquid, gas, or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are a=0.3658 Pa m6/mol2 and b=4.286105 m3/mol. Using the van der Waals equation, estimate pressure of CO2 at that temperature and density. `From #2, the initial temperature of the gas is 10C but it rises to 30C after some time: Find the ff: A. initial and final temperatures in °F,?,????.B. the change in temperature in °C,°F,?,????What would be the volume of 3.90 moles of an ideal gas, at STP? What is the pressure of this gas, if the temperature was increased from 0 degC to 56.9 degC as it stays in a constant volume container?
- A cylinder bore in an aluminum engine block has a diameter of96.00 mm at 20.00 °C. (a) What is the diameter of the bore whenthe engine operates at 119.0 °C? (b) At what temperature is thediameter of the hole equal to 95.85 mm?1. A three-liter tank contains two gram-moles of nitrogen at − 150.8o C. Estimate the tank pressure using the ideal gas equation of state and then using the Virialequation of state truncated after the second term. Taking the second estimate to be correct, calculate the percentage error that results from the use of the ideal gas equation at the system conditions. Data for nitrogen: Tc = 126.2 K, pc = 33.5 atm, and ω = 0.04012. 2. One mole of propane gas is to be expanded from 0.001 m3 to 0.040 m3 while incontact with a heating bath at 100o C. The expansion is not reversible. The heatextract from the bath is 600 J. Determine the work for the expansion using theVan der Waals equation of state.A certain gas at a temperature equivalent to 24°C in a 9 m³ is compressed to 150 kPa to 2 m³, what is the resulting pressure in isothermal condition?
- What is the percentage of error involved in treating carbon dioxide at 7 MPa and 380 K as an ideal gas?One mole of oxygen gas is at a pressure of 6.85 atm and a temperature of 31.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? (b) If the gas is heated so that both the pressure and volume are doubled, what is the final temperature?Some incandescent light bulbs are filled with argon gas. What is vrms (in m/s) for argon atoms near the filament, assuming their temperature is 2900 K? ______________________ m/s
- Under what circumstances would you expect a gas to behave significantly differently than predicted by the ideal gas law?Suppose 26.0 g of neon gas are stored in a tank at a temperature of 152C. (a) What is the temperature of the gas on the Kelvin scale? (See Section 10.2.) (b) How many moles of gas are in the tank? (See Section 10.4.) (c) What is the internal energy of the gas? (See Section 10.5.)9) Nitric oxide is a gaseous anesthetic used by dentists. What volume is occupied by 30.0 g of nitrogen monoxide (laughing gas) at 0°C and 760 torr? 10) What is the molar volume of He gas at STP (Standard Pressure and Temperature, 1 mol, 273K, 1ATM)?