Use the solubility curve above to answer this question. At 40°C, 100 grams of NaClO3 is added to 100 grams of water. What will happen if an additional 10 grams of NaClO3 is added to the solution? a. All 10 g will dissolve. b. 5 g will dissolve; 5 g will percipitate. c. All 10 g will settle to the bottom. d. All 110 g will crystallize out of the solution.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

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