The volume of a balloon decreases, what happens to the air pressure within the balloon? assume all other properties remain constant. a. it stays the same. b. it increases. c. it decreases.

The volume of a balloon decreases, then the air pressure within the balloon increases

Explanation:

The relation between volume and pressure of of a balloon is given by using Boyle's law. Mathematically, the Boyle's law is given by :

k is the constant

It shows that there is an inverse relationship between pressure and volume of a balloon. In this case, the volume of a balloon decreases, then the air pressure within the balloon increases. So, the correct option is (B) "it increases".

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