N2 + H2 ---> NH3

1, 2, 3
3, 2, 1
1, 3, 2
2, 3, 1

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?