A chemist adds 310.0 mL of a 8.9 x 10^-6 M silver(II) oxide solution to a reaction flask. Calculate the micromoles of silver (II) oxide the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

b. examine and describe cells

the answer is 303.15 or 303

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