Cecil is working with samples of chlorine (cl), oxygen (o), bromine (br), and silver (ag). the samples are all at room temperature. which substance is most likely the most dense?

chlorine
oxygen
bromine
silver

Option (d) is the correct answer.

Explanation:

As it is known that density is the amount of mass divided by the volume.

Mathematically,     Density =

Since, mass is directly proportional to density. Hence, more is the mass of an object more will be its density.

At room temperature chlorine exists as a gas and its molar mass is 35 g/mol.

At room temperature oxygen exists as a gas and its molar mass is 32 g/mol.

At room temperature bromine exists as a liquid and its molar mass is 80 g/mol.

At room temperature silver exists as a solid and its molar mass is 108 g/mol.

As the mass of silver is greater and it exists as a solid at room temperature. Hence, it will be most dense in nature.

Therefore, we can conclude that out of the given options silver substance is most likely the most dense.

small = small current large mag large current

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.