In the following reaction, 2H2 (g) + O2 (g) + 2 H2O (g), how many moles of oxygen (O2) would be required to react with 16.3 moles of hydrogen (H2)? Round your
answer to 1 decimal place.

H+ + cn– + li+ + oh– mc001-4.jpg li+ + cn– + h2o

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.