Combustion of hydrocarbons such as propane ( c3h8 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.

1. write a balanced chemical equation, including physical state symbols, for the combustion of gaseous propane into gaseous carbon dioxide and gaseous water.

2. suppose 0.150kg of propane are burned in air at a pressure of exactly 1atm and a temperature of 12.0°c . calculate the volume of carbon dioxide gas that is produced. round your answer to 3 significant digits. l

239 L

Explanation:

1. Propane reacts with oxygen to produce carbon dioxide and water:

Firstly, 3 carbon atoms are required on the right:

Secondly, 8 hydrogens in total (4 water molecules) are required on the right:

On the right, we have a total of 10 oxygen atoms, this implies we need 5 oxygen molecules on the left:

2. Calculate moles of propane using the the ratio of mass to molar mass:

According to the stoichiometry, we have 3 times greater amount of carbon dioxide:

Use the ideal gas law to solve for volume:

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< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >