When he carried out his experiment, Nathan found that he had three small beakers of the same size and two slightly larger ones. He decided that the
sizes were close enough to compare the boiling behavior of the liquids. Is he
correct? Why or why not?
O A. No, because the area exposed to the surface will be different,
changing the rate of boiling.
B. No, because the intermolecular forces will be different in different
containers.
O C. Yes, because the rate of boiling will be the same no matter what
shape the container is.
D. Yes, because the surface area will be different, making up for the
change in shape

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.

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