How does the octet rule relate to ion formation? a) the octet rule states that atoms form ions in an effort to acquire electron configuration permanence. b) ion formation can only occur if the atom has a full octet electron configuration of valence electrons. c) formation of mutable noble gas configuration ions results from atoms with ambiguous octet configurations. d) atoms gain or lose electrons forming ions to achieve a more stable electron configuration in its valence shell.

D.

Explanation:

Atoms gain or lose electron to become more stable

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

answerto predict;