Module 2 Assignment: Part 2
Make an order of magnitude estimate of the energy (in joule) contained in a quart of soda
1,536,000 Joule
What is the energy density (energy per mass) of butter?
45 MJ/kg
What is the energy density (energy per mass) of gasoline?
45 MJ/kg
What are the roles of a catalyst in the energetics of a chemical reaction?
A catalyst increases the rate of reaction A catalyst is not consumed by the reaction
You are given 12 grams of an unknown substance. How you would accurately determine the precise composition of the unknown substance?
Excite a small portion of it and identify the spectral lines
What happens energetically when chemical bonds are formed?
Forming bonds releases energy
The activation energy of a chemical reaction is the
energy input needed to get the atoms to start sharing their electrons