Select the correct answer
the cube in the image has volume of 1,000 cubic feet the other solid has the same base and he has the cute but the length of each of its
janted dess units longer than the what is the volume of the titted solid
abd ble feet
1.000 cubic feet
c
0
.200 ubic feet
,000 cubic feet

gleee

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