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What volume will the gas occupy at STP? At a certain temperature, molecules of methane gas, CH4 have an average velocity of 0.098 m/s. What is the average velocity of carbon dioxide molecules at this same temperature? Find the relative rate of diffusion for the gases chlorine, Cl2 and ethane, C2H6.
A sample of gas has a mass of 0.501 g. Its volume is 0.425 L at a temperature of 110 oC and a pressure of 1120 mmHg. Find its molar mass. Solutions. How many moles of gas (air) are in the lungs of an adult with a lung capacity of 3.9 L? Assume that the lungs are at 1.00 atm pressure and at a body temperature of 40 oC. (Hint: V, P, and T are given.
I. Complete the last entry in the “Useful Figures and Formulas” section one the first page of this worksheet by calculating the missing value in “Molar Volume”. J. The total pressure of hydrogen, helium and argon is 755 mm Hg in a mixture of the three gases. 1) If PHe = 320 mm Hg and PAr = 405 mm Hg, determine P. H .
1. A 224 mL sample of argon had its pressure changed from 95.0 kPa to 185 kPa. What is its new volume? P1 = . V1 = . P2 = . V2 = ? Eq: V2 = . 2. Chlorine gas occupies a volume of 2.3 liters at 180 kPa pressure. What volume will it occupy at 1.0 atm pressure? 3. Nitrogen gas occupies a volume of 270. mL at a pressure of 730. mmHg.
4 Find the volume of hydrogen gas (measured at room temperature and pressure) formed when 0.540 g of calcium reacts with hydrochloric acid. Ca(s) + 2HCl(aq) → CaCl
The ideal gas law states that PV=nRT, where P is the pressure of a gas, V is the volume of the gas, n is the number of moles of gas present, R is the ideal gas constant, and T is the temperature of the gas in Kelvins. Common mistakes: Students express T in degrees celsius, rather than Kelvins.
2) What is the volume of 1.00 mole of a gas at standard temperature and pressure? 3) A 113L sample of helium at 27°C is cooled at constant pressure to -78.0°C. Calculate the new volume of the helium. 4) What volume of He is occupied by 2.35 mol of He at 25°C and a pressure of 0.980 atm?
