After eating a hearty stew you cooked over a campfire with your 0.250-kg aluminum-alloy pot, you place the pot in a plastic bucket containing 1.00 kg of water. The water's temperature increases 1.00°C and the temperature of the pot decreases
17.5°C.
Disregarding energy transfer as heat to the surrounding air and bucket, what is the specific heat capacity of the pot?

make sure your answer is in the correct significant figures.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

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