Rainwater collected in akron contains pb, cu and zn at 8.5, 5.0 and 7.5 ug/l. determine these concentrations in units of mol/l (or nmol/l). b) this same rainwater contains 0.8 mg/l ca and 1.2 mg/l mg. determine the hardness of this water in units of mg/l as caco3. hardness is the sum of the concentrations of multivalent cations in the water, which in this case include ca (as ca2+) and mg (as mg2+). hardness is expressed in "equivalent" units or "caco3" units.

beta decay is the answer

c. 75.7

i think that is the right

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 .