What is true about terrestrial planets
a. earth and jupiter are about the same size.
b. earth and venus are about the same size.
c. venus and mars are about the same size.
d. earth and mars are about the same size

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.