Base your answer to this question on the information below.
hydrogen peroxide, h2o2 , a water-soluble campound. the concentration of an aqueous hydrogen peroxide solution that is 3% by mass h2o2 is used as an antiseptic. when the solution is poured on a small cut in the skin, h2o2 reacts according to the balanced equation below.
2h2o2 -> 2h2o+ o2
calculate the total mass of h2o2 in 20.0 grams of an aqueous h2o2 solution that is used as an antiseptic.
1. (34)(20.0)g
2. (34)(0.03)g
3. (20.0)(0.03)g
4. (20.0)(3)g

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.