EMERGENCY! WORTH 100 POINTS AND BRAINLIEST TO FASTEST CORRECT ANSWER! Write a chemical equation for the combustion of each of the following substances. If a compound contains carbon and hydrogen, assume that
carbon dioxide gas and liquid water are produced.
a.) solid barium
b.) solid boron
c.) liquid acetone (C3H6O)
d.) liquid octane (C8H18)

1) solid barium

2Ba(s)  &  O2 9g)  -->  2 BaO (s)

2) solid boron

4 B(s) + 3 O2 (g) → 2 B2O3 (s)

3) liquid acetone (C3H6O)

1 C3H6O(l)  & 4 O2 (g)  -->  3CO2(g)  &   3H2O (g)

4) liquid octane (C8H18)

2 C8H18   & 25 O2 (g)  -->  16CO2 (g)  & 18 H2O (g)

Explanation:

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 .

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )