A student records his body temperature at 6:00 am and at 6:00pm each day for 30 days. He notices a trend in his temperature data and offers a possible explanation. His explanation is known as A. The conclusion b. A limitation c. The hypothesis d. Raw data

the answer is a. co2, this would be colder than the : )

explanation:

if you mean hydrogen and oxygen then water is the product

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