To what volume must 175 l of air at 1.0 atm be compressed to yield a pressure of 5.2 atm? (you can assume constant temperature.

The volume upto which a gas can be  compressed at 5.2 atm pressure is 33.65 L.

Explanation:

Under constant temperature:

Initial volume of the gas

Initial pressure of the gas =

Final volume of the gas

Final pressure of the gas =

Applying Boyle's law:

(constant temperature)

The volume upto which a gas can be compressed at 5.2 atm pressure is 33.65 L.

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