The image shows a molecular model of a compound using balls and sticks. each ball is an atom and each stick is a bond. if you were to use balls and sticks to model a molecule of an element, how must your model differ from what’s shown? a. the sticks must be shorter. b. the balls must be the same color. c. the balls must be smaller. d. the balls must change to cubes.

Option (B) is the correct answer.

Explanation:

An element contains atoms with same atomic number. This means that each atom of an element will have same number of protons.

For example, in oxygen element all atoms of oxygen will have atomic number 8.

Thus, we can conclude that if you were to use balls and sticks to model a molecule of an element, then the balls must be the same color.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

and ur welcm

: )

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.