Podcast
Questions and Answers
How many molecules of carbon dioxide are produced if there are 5 carbon atoms in the hydrocarbon?
How many molecules of carbon dioxide are produced if there are 5 carbon atoms in the hydrocarbon?
- Five molecules (correct)
- Four molecules
- Two molecules
- Three molecules
Why is it necessary to balance the chemical reaction element-wise during combustion?
Why is it necessary to balance the chemical reaction element-wise during combustion?
- To increase the energy absorbed
- To speed up the reaction
- To make sure all atoms are accounted for (correct)
- To ensure the energy released is accurate
In the combustion of methane, what is the total energy absorbed for breaking bonds?
In the combustion of methane, what is the total energy absorbed for breaking bonds?
- 712 kJ
- 3358 kJ
- 1490 kJ
- 2642 kJ (correct)
Which type of bond formation releases the highest amount of energy during the combustion of methane?
Which type of bond formation releases the highest amount of energy during the combustion of methane?
Why is the net energy value released during bond formation an approximation?
Why is the net energy value released during bond formation an approximation?
What is a key difference between complete combustion and incomplete combustion?
What is a key difference between complete combustion and incomplete combustion?
What is bond energy also known as?
What is bond energy also known as?
Why are fires sometimes extinguished by smothering them with a heavy cloth?
Why are fires sometimes extinguished by smothering them with a heavy cloth?
In the combustion reaction formula, what are typically the reactants?
In the combustion reaction formula, what are typically the reactants?
What is the main reason for the energy released during combustion reactions?
What is the main reason for the energy released during combustion reactions?
What is the defining feature of a combustion reaction?
What is the defining feature of a combustion reaction?
Why doesn't combustion take place all the time at places like gas outlets and campsites?
Why doesn't combustion take place all the time at places like gas outlets and campsites?
What is the difference between complete and incomplete combustion reactions?
What is the difference between complete and incomplete combustion reactions?
Why are hydrocarbons used as fuels for vehicles and cooking?
Why are hydrocarbons used as fuels for vehicles and cooking?
What is required to break the bonds present in hydrocarbons and oxygen to start a combustion reaction?
What is required to break the bonds present in hydrocarbons and oxygen to start a combustion reaction?
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