A chemist designs a galvanic cell that uses these two half-reactions half-reaction standard reduction potential Zn' (aq)+2e - Zn(s) red0.763 CrO4 (aq)+4H200)+3e - Cr(OH)3(s)+5OH (aq) Fred0.13 v Answer the following questions about this cel Write a balanced equation for the half-reaction that happens at the cathode Write a balanced equation for the half-reaction that happens at the anode Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. Do you have enough information to calculate the cell voltage under standard conditions? Yes
No
If you said it was possible to calculate the cell voltage, do so and enter your answerV here. Be sure your answer has the correct number of significant digits

the answer is minerals.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

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