The answer to your question would more than likely be chemical energy, natural gas, and chemical energy. but I don't know what grade your in I'm in eighth if your below I know the answer. I'm pretty sure I had a question exactly like this last year but that was last year so if it's wrong sorry. I looked it up on Google to make sure
Cause some ingredients might be expired and someone might get poisoned
POH = -log[OH-]
pH + pOH = 14 (at 25 degrees celsius)
pOH = -log(5.4*10^-4) = 3.27
pH = 14 - 3.27 = 10.73
The pH of a solution with a hydroxide ion concentration of 5.4*10^-4 M is 10.73.
