A chip bag has a volume of 0.91 L when the pressure is 28.8 psi. What is the pressure if the volume is 10.39 L?

2.52 psi

Explanation:

boyles law

P1V1 = P2V2

P2 = P1V1/V2

P2 = (28.8 * .91)/10.39

P2 = 2.52242540905

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