1. Classify each of the listed catalysts as a Lewis or Bronsted-Lowry acid or base a. Sulfuric acid b. Phosphoric acid c. Magnesium bromide etherate d. Aluminum chloride e. Calcium carbonate f. Sodium acetate g. Triethylamine h. 4-N, N-dimethylaminopyridine

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

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

hope this contact me for more questions if you'd like: )