Question

1.A weather balloon contains 1.10X10^5 moles of He, an ideal gas. At standard pressure, the volume of the balloon is 2.70X10^6 L. what is the temperature of the He in the balloon in C?

2. Scuba divers breath a mixture of helium and oxygen gasses for dives in excess of 150 feet. If 15.68 grams of oxygen gas and 7.60 grams of helium gas are both added to a 5.00 L SCUBA tank at room temperature, what will be the total pressure in the tank, assuming ideal behavior?

3. 2.1417X10^3 mg of a homoatomic diatomic ideal gas occupies a volume of 1.37X10^3 cc at a temperature of 25 C and a pressure of 16.14 in. Hg. what is the identity of the gas?

Answer 1

Answer:

1) 26 ^o​​​​C

The temperature of the He in the weather balloon which contains 1.10X10^5 moles of He, an ideal gas ,at standard pressure(1 atm) with a volume of 2.70X10^6 L can be calculated using ideal gas equation as follows.