Unit 6 Review

What are the values for STP

For an Ideal gas, as you increase volume, how does this affect the gases in the cylinder below?

Potassium chlorate decomposes according to this balanced equation:

2KClO3(s) → 2KCl(s) + 3O2(g).

A sample of KClO3 is decomposed at a temperature of 50.0°C and a barometric pressure reading of 756.1 mm Hg. The resulting oxygen is collected by water displacement. What is the partial pressure of the oxygen gas?

To what temperature must a sample of nitrogen at 37.0°C and 0.625 atm be heated so that its pressure becomes 1.57 atm at constant volume?

What pressure, in atmospheres, would a 35.8 g sample of nitrogen gas (N2(g)) exert on its 10.0 L container at a temperature of 20.0°C?

A sample of Xenon gas occupies 1.90 L at 251 kPa and –18°C. What was the temperature of the xenon ( in °C ) if the gas originally measured 1.65 L at 205 kPa?

The specific heat of benzene, C6H6, is 1.08 Jg–1 °C–1. How many joules of heat are needed to raise the temperature of 65.2 g of benzene form 25.0°C to 32.5°C?

What is the total enthalpy change associated with transforming a 37.4 g block of ice at –15.0°C into 37.4 g of steam at 142.0°C?