Please help me ASAP What is the main difference between the reaction in a hydrogen-oxygen fuel cell and the burning of hydrogen in the air?

A. When hydrogen burns in air, the oxidation and reduction reactions are separated.

B. The burning of hydrogen in air does not produce water.

C. The reaction in a fuel cell does not produce water.

D. The reaction in a fuel cell is very controlled.

What was the procedure by which case united states vs lopez went to court

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

The fact that the total amount of energy in a system remains constant is a(n)