At what temperature must a reaction occur if you are able to calculate the heat of reaction by using standard heats of formation? 50°c 100°c 25°c 0°c

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge