HCl(aq) represents liquid hydrochloric acid.

Consider the graph of the quadratic function . Determine the intervals where the function is increasing and decreasing.    

Select the balanced equation.

Identify the toolkit function .

The combustion of hydrocarbons always result in the formation of water.  State 3 other types of chemical reactions that may result in the formation of water.        (3 marks)

CrO is a metal oxide.

In the lab, it is possible to burn potassium in oxygen. Give the balanced chemical equation for the combustion of potassium.   (5 marks)

From the following elements, which one has the lowest first ionization energy?

Find the average rate of change of the function on the interval .  

EXTRA CREDIT   A doctor prescribes a medication, and the concentration of the drug in a patient’s bloodstream (in mg/L) after hours is modeled by the function . Find the concentration of the drug in the bloodstream after 2 hours and then determine when the concentration will reach mg/L.   ANSWER:   The concentration of the drug after 2 hours is mg/L.   The concentration will reach 5 mg/L after hours.