Twenty-five pounds of gas consisting of 30% CO2, 40% N2, and 30%O2 are placed in cylinder 200ft³ in volume. What is the  a. Average molecular weight of the gas? b. Density of the gas in kg/m³?

Solve the following problems:- 1-How many moles of gas are contained in 890.0 mL at 21.0 °C and 750.0 mm Hg pressure?

What pressure is exerted on the bottom of a 0.5m wide by 0.9 m long gas tank that can hold 50kg of gasoline by the weight of the gasoline in it when it is full?

Crude oil being produced from a well is known to be a mixture of 30% water and 70% oil by volume. This mixture is stored in a vertical cylindrical tank and allowed to separate into a lower water layer and upper oil layer. The tank is vented to the atmosphere on top and the gauge pressure at the bottom of the tank is measured to be 87,000 Pa. Take the density of the water to be 998 kg/m³ and that of the oil to be 840 kg/m 3. Find the heights of the individual layers of water and oil in meters, i.e. hwater and hoil shown below. P oil vent water air h oil h water