The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is a. argon b. xenon c. helium d. krypton the gases used in different types of welding would include a. oxygen and hydrogen b. oxygen, hydrogen, acetylene and nitrogen c. oxygen, acetylene and argon d. oxygen and acetylene the property of a substance to absorb moisture from the air on exposure is called a. osmosis b. deliquescence c. efflorescence d. desiccation in which of the following activities silicon carbide is used? a. making cement and glass b. disinfecting water of ponds c. cutting very hard substances d. making casts for statues the average salinity of sea water is a. 3% b. 3.5% c. 2.5% d. 2%

1.  C. helium

2.  D. oxygen and acetylene

3.  B.  deliquescence

4.  C.  cutting very hard surfaces

5.  B.  3.5%

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 .