1. 1/4 mole of 02 gas and 0.15 mol of hydrogen gas are mixed in a liter container at a temperature of 25°C. What is the total pressure of the gaseous mixture? 2. A sample of gas was collected over H2O...

Solve the following and show solution: answer question #1, #2,#3 and #4. Please take note of the direction.

Extracted text: 1. 1/4 mole of 02 gas and 0.15 mol of hydrogen gas are mixed in a liter container at a temperature of 25°C. What is the total pressure of the gaseous mixture? 2. A sample of gas was collected over H2O at 27°C and 600 torr barometric pressure; volume 260 mL. (The vapor pressure of water at 27°C = 25 torr). What volume would the dry gas occupy at STP? 3. A gas in a 1.00 L container is allowed to expand to a volume of 5.00 liters. If the initial pressure is 748 torr, what is the final pressure if the temperature does not change? 4. A balloon containing 1.00 liter of e at STP is purchased in an air- conditioned store, in which the temperature is 25°C, and carried outside where it heats to 45°C. if there is no pressure change, what is the final volume?