Question 7 (1 poil The line-emission spectrum of an atom is caused by the energies released when electrons
Оа
Ob
"jump" from a lower energy level to a higher energy level.
"jump" from a higher energy level to a lower energy level.
"jump" from the ground state to an excited state.
None of the above

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

answer: mercury

explanation: