Problem 7. The pressure inside a 1.0L balloon at 25 in atmospheres, when the balloon is cooled to -42°C the Combined Gas law). Ans: is the pressure is 745 mmHe What is the pro expands to 2.0 L in volume Problem 8. A sample of nitrogen gas contains the new volume if the P and Tare kept constant, but to 2.5 moles. (Use the Avogadro's law). Ans: V2 ° 2.5 moolume if pleoni O moles in a volume of 3.5...
Question-5 (2 marks) The total pressure of three gases in a balloon is 4.5 atm. The balloon contains 2.0 moles of O2, 3.0 moles of N2 and 5.0 moles of H2. What is the partial pressure of N2 gas in the balloon?
A sample of He gas (3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C at constant temperature in a 9.0 L flask. The total pressure in the flask was __________ atm. Assume the initial pressure in the flask was 0.00 atm. In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is __________ if the partial...
Question 2 (1 point) In a thermochemistry demonstration, a 1.00 L balloon at room temperature (22.1 Celsius) is placed into liquid nitrogen (-196 Celsius). If the gas inside the balloon acts ideally, its new volume will be mL. Question 3 (1 point) The volume occupied by 2.47 moles of hydrogen gas at 1.02 atmospheres and 23.8 degrees Celsius is liters.
25. You’re at the zoo and have a big red 3.20 L helium balloon. The barometric pressure is 790.0 mm Hg. Then you hear the roar of a lion. Startled, you accidently release the balloon. It flies away. By the time it reaches the clouds the atmospheric pressure is only 0.300 atm. What is the new volume of the balloon? a) 6.20 L b) 11.1 L c) 1.06 L d) 8.43 L 26. A gas sample is held at constant...
A volume of 2 L of helium at 46'C and 1.2 atm pressure was added to a vessel that contained 4.5 L of nitrogen at STP. What is the total pressure and the partial pressure of each gas at STP after helium is added? The answer to this problem is P = 1.46 atm, P helium = 0.46 atm, P nitrogen = 1.00 atm. However, when I tried to use the Combined Gas Law, why must V2 be the volume...
1. A volume of 80.0 liters of oxygen is collected over water at 40.0 °C. The atmospheric pressure in the room is 0.980 atm. What is the partial pressure of the oxygen? The vapor pressure of water at 40 °C is 55.324 torr. A) 0.907 atm B) 0.689 atm C) 0.815 atm D) 0.784 atm E) 1.05 atm 2. A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0...
8. If you have a 3.0 L cylinder of compressed air that contains 2.0 g of O2, and 8.0 g of N2, then at room temperature (assume 298 K), what would be the total pressure in the tank (in atm), and the pressures of O2, and of N2 (also in atm) separately? 1. A guage on a compressed gas cylinder in a hospital reads 2.200 E3 psi (pounds per square inch). (1.00 atm = 14.7 psi). Express this pressure in...
Worksheet 8 (Intro) 8. A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases the tank are 35 atm of O, 5.0 atm of N2, and 25 atm of He, what is the total pressure inside of the tank? 9. The partial pressure of oxygen gas in a mixture of oxygen and nitrogen gases is 1.02 atm. The total pressure of the mixture is 2.43 atm. Calculate the partial pressure of nitrogen...
5. Would you expect the volume of gas contained in a balloon to increase or decrease if it is exposed to lower temperatures? A balloon containing 3.50 L of gas at room temperature, 20 °C, is submerged into a vat of liquid nitrogen. The temperature of liquid nitrogen is 77 K. What will be the volume of the balloon at this very cold temperature? 6. A sample of CO2 gas occupies a volume of 225 mL at 25°C. If the...