There are several different models that represent compounds. one type of model is shown. what type of model is shown? a structural formulaa chemical formulaa space-filling modela ball-and-stick model

Option (a) is the correct answer.

Explanation:

A formula that represents how atoms are linked or joined together is known as a structural formula.

For example, the model given in the image (in question) represents arrangement of all the atoms. Therefore, it is a structural formula.

Whereas a chemical formula represents a compound along with ratio of compounds.

A space filling model and a ball-stick model is a three dimensional model. In space filling model atoms are represented by spheres whereas in ball stick model atoms are represented by ball and bonds are represented by stick.

a structural formula

Explanation:

a=d/t

a="triangle"v/t

explanation:

a = acceleration

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.