Weight = Mass x Acceleration due to gravity (W=mg) Weight is a measure of the Gravitational force between the object and
the earth. The acceleration of gravity on Earth is less
Weight is
measured in units of
If one object has more mass than another then it weighs (
more / less ) than the other object.
As an astronaut goes to the moon, his mass
but his
weight
This is because as he got further away from the Earth,
the acceleration of gravity

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

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.

it is called acid bonding

dynamic equilibrium is the answer.