Ifyou spill a little of the benzoic acid you mix it with the lauric acid will the molecular weight that you calculate for the benzoic acid be too high or too low? why?

Hey there!:

A.Molecular weight of Benzoic acid will be same as expected

B.Molecular weight of Benzoic acid will be same as expected

Depression in freezing point is a colligative property and given by the equation :

ΔTf = Kf × m × i

where :

ΔTf is depression in freezing point of solvent after adding the solute.

Kf is freezing point depression constant for a particular solvent

m is molality (ie.moles of solute/Kg of solvent)

i is vant hoff factor(here lauric acid doesn't ionize hence i = 1)

Hope That helps!

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

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 .