Write Kp expression for the following reaction: 2 H2O2 (g) ⇔ 2 H2O (g) + O2 (g) You may write this only in your scratch paper if you prefer that over typing.

Consider the following reaction for the production of NO 2 . 2 NO(g) + O2(g) → 2 NO2(g) What mass of O2 is required to produce 5.00 L NO2 at 305 K and 752 mm Hg? (R = 0.08206 L⋅atm/mol⋅K) Must submit required work

A concentrated phosphoric acid solution is 85.5% H 3PO 4 by mass and has a density of 1.69 g/mL at 25°C. What is the molarity of H 3PO 4? Must submit required work

A gas sample is heated from −20.0°C to 57.0°C and the volume is increased from 2.00 L to 4.50 L. If the initial pressure is 0.134 atm, what is the final pressure? Must submit required work

The _____ is defined as the number of moles of a particular substance in a mixture divided by the total number of moles of all substances present.

Arrange HF, HCl, and HBr in increasing order of their boiling point.

A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6°C. Determine the temperature at which the volume of the gas is 3.40 L. Must submit required work

A flexible vessel contains 45 L of gas where the pressure is 1.6 atm. What will the volume be when the gas is compressed to a pressure of 0.70 atm, the temperature remaining constant? Must submit required work

A flexible vessel contains 14.00 L of gas at a pressure of 1.27 atm. Under the conditions of constant temperature and constant number of moles of gas, what is the volume of the gas when the pressure of the vessel is decreased by a factor of two? Must submit required work

For an ideal gas, which two variables are directly proportional to each other (if all other conditions remain constant)? 1. T and n2. V and n 3. V and T