The burning of natural gas is a change that is:

Balance each of the following equations:  (3 marks each) a) H2SO4 + Al(OH)3 → Al2(SO4)3 + H2O b) Ca3P2 + H2O → PH3 + Ca(OH)2 c) C3H7OH + O2 → CO2 + H2O d) Cl2 + CrBr3 → Br2 + CrCl3

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?