Hons Chem Sem 2 Review 22/23

• 2

• 3

• 3.33

• 7.5

Pressure and volume changes at constant temperature are

• inversely related

• directly related

• exponentially related

• unrelated

The pressure of a sample of helium is 2.0 atm in a 200 mL container. If the container is compressed to 40 mL without changing the temperature, what is the new pressure?

• 200 atm

• 0.10 atm

• 100 atm

• 10 atm

What is the pressure exerted by 1.2 mol of gas with a temperature of 20^oC and a volume of 9.5 L?

• 0.030 atm

• 1.0 atm

• 3.0 atm

• 30 atm

To conduct electricity, a solution must contain

• nonpolar molecules

• polar molecules

• ions

• free electrons

In the expression like dissolves like, the word "like" refers to similarity in molecular

• mass

• size

• energy

• polarity

Compared to pure water, a solution of salt and water

• is less dense

• is a poor conductor of electricity

• has a lower boiling point

• has a lower freezing point

The first step in most stoichiometry problems is to ______.

• balance the equation

• convert given quantities to volumes

• convert given quantities to moles

• convert given quantities to masses

When an equation is used to calculate the amount of product that will form during a reaction, then the value obtained is called the ____.

• actual yield

• theoretical yield

• percent yield

• minimum yield

Acids react with______.

• bases to produce salts and water

• salts to produce bases and water

• water to produce bases and salts

• neither bases, salts, nor water