When solid CaCl2 dissolves in water, which of the following processes releases energy?

A 3.00 L sample of an ideal gas in a closed container at 25.0 ºC and 76.0 torr is heated to 300 ºC. What is the pressure (in torr) of the gas sample after heating?

In the resonance form of ozone (O3) shown below, what is the formal charge on the oxygen atom notated with an arrow?

Carbon exists in different elemental forms in nature, including diamond and graphite. These two forms of carbon are examples of                                .

What is the oxidation number of each oxygen atom in the compound, potassium peroxide?

What is the formal charge on the singly-bonded oxygen atom in the resonance structure of H2SO4 below?

What is the chemical formula for the peroxide anion?

What is the hybridization of the carbon atom notated with an arrow in the Morphine molecule shown below?

What is the EDG and MG of the molecule represented by the ball and stick model below?

Which of the following compounds has an expanded octet around the central atom when the best Lewis Structure is drawn for it?