Which element in each pair has the larger first ionization energy

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

the answer is b. dilution

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.