How does the molecular motion of a sustance change when it goes from liquid to solid?

A) The molecules lose energy, and their relative motion decreases
B) The molecules gain energy, and their relative motion decreases
C)The molecules gain energy, and their relative motion increases
D) The molecules lose energy, and their relative motion increases

B) The molecules gain energy, and their relative motion decreases

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890