Part D:The term “carbon footprint” refers to how much greenhouse gas a person or an organization emits. Do you think this town has a low or a high carbon footprint compared with towns that do not take these steps? Explain your answer. Part E:Suppose you’ve been asked to design a study about this town. You want to know how their efforts have affected climate change. What is one question you can ask that can be solved by scientific investigation? What types of data would you need to answer your question?

1 a

2 d

3 a

4 c

explanation:

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol