2. Describe the greenhouse effect on our planet. You may refer back to the videos in the Instructional
Resources page to help you answer. Try to use these vocabulary words to formulate your response: gases,
Insulation, sun, temperature, etc. in your response.
Sun
I
Atmosphere
Earth

i believe the answer is true.

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