why do you post the same question three times?
When someone sees it, they will help, if they can.
Until then, repeated posts just waste your time and ours.
I would help, but chemistry is not my main subject. I'd have to study up on enthalpy to answer, and I guess you can do that ...
Given the following reaction: (That has an enthalpy of -483.6 kJ.)
4H2(g) + 2O2(g) ---> 4H2O(g)
How many grams of hydrogen is needed to produce 5000 kJ of energy?
2 answers
You follow the same process and I worked for you earlier.
1 answer