The International Association of Chemical Societies was created to make sure that certain chemical processes and standards were followed. Which of the following was not one of those standards?
The standardization of the atomic weights of newly and previously discovered elements
O
The regulation of the IUPAC Secretariat office in North Carolina
The naming (nomenclature) of both inorganic and organic chemicals
The creation and maintenance of tables identifying the physical and chemical properties of elements
and compounds

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

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