Astudent dissolves 15.g of styrene in 250.ml of a solvent with a density of 0.88g/ml. the student notices that the volume of the solvent does not change when the styrene dissolves in it. calculate the molarity and molality of the student's solution. round both of your answers to 2 significant digits. molarity==

The molarity and molality of styrene solution is 0.58 M and 0.66 m respectively

Explanation:

To calculate the mass of solvent, we use the equation:

Density of solvent = 0.88 g/mL

Volume of solvent = 250. mL

Putting values in above equation, we get:

To calculate the molarity of solution, we use the equation:

Given mass of styrene = 15. g

Molar mass of styrene = 104.15 g/mol

Volume of solution (solvent) = 250. mL

Putting values in above equation, we get:

To calculate the molality of solution, we use the equation:

Where,

= Given mass of solute (styrene) = 15 g

= Molar mass of solute (styrene) = 104.15 g/mol

= Mass of solvent = 220 g

Putting values in above equation, we get:

Hence, the molarity and molality of styrene solution is 0.58 M and 0.66 m respectively.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .