PLEASE EXPLAIN STEPS, THANKS!

Problem 4 Write the correctly balanced half-reaction for the following redox couple in acidic solution (H2O/H+)and answer problems 4 to 6 . NO3NO How many H+is there in the correct balanced half-reaction? [answer in number] Problem 5 How many H2O is there in the correct balanced half-reaction? [answer in number] Problem 6 How many electrons are there in the correct balanced half-reaction? [answer in number]