The combustion of pentane, c5h12, occurs via the reaction

c5h12(g)+8o2(g)→5co2(g)+6h2o(g)

with heat of formation values given by the following table:

substance δh∘f
(kj/mol)
c5h12(g) −35.1
co2(g) −393.5
h2o(g) −241.8

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 .

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds