Which is considered a good insulator of heat? * 1 point
Captionless Image
A. aluminum, because it allows heat to flow easily.
B. glass, because it allows heat to flow easily.
C. plastic, because heat is unable to flow easily through it.

Aluminum, because it allows heat to flow easily.

can you list the answers so i can answer

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