A sample of Ne experiences a change in pressure from 8.2848 atm to 7.8939 atm. During this change, the temperature is also changed from 314.76 K to 683.79 K. If its new volume is 56.09 L, what was its original volume in liters?

they are made of gases.

they have a spherical shape.

they make energy through fusion.

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