1. Which of the following statements are true? a. During a quarter moon, we see a half circle
b. The lit portion is larger during gibbous Moons than crescent moons
C. The duration of the moon's orbit is identical to the Moon takes
to complete a cycle of phases
d. There is only one crescent moon phase during each cycle
moons

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.