In the figure above, according to Kepler's laws of planetary motion, a. Ar = A2.
c. if Dtz = Dt2, then the orbit is circular.
b. DL: > Dt2.
d. if Dtz = Dtz, then A: = A2.
Please select the best answer from the choices provided

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.

catya your not at all which answer i've seen you do this on another question!