If the elements and O interact and bond explain what will need to happen in order for the Oxygen atom to achieve stability.
- As a metal atom it will gain two electrons
- As a non-metal atom it will lose two electrons.
- As a metal atom it will lose two electrons.
- As a non-metal atom it will gain two electrons.

one state would change   like louisiana to texas. thats a change

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