Areport was created that outlined the outbreak of a disease called fungal meningitis among patients who received contaminated steroid injections. another report was published that outlined solutions to prevent job injuries that could occur in the construction industry. the government agency that is responsible for documenting both of these reports is

the centers for disease control and prevention

the answer is c. nacl

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