The mass of a single gold atom is 3.27×10-22 grams. how many gold atoms would there be in 70.6 milligrams of gold?

 [Total mass of gold atoms] = [Mass of one gold atom] x [number of gold atoms]  

divide both sides by mass of one atom:  

[Total mass of gold atoms] / [Mass of one gold atom] = [number of gold atoms]  

(0.130 grams) / (3.27E-22 grams/atom) = 3.975535168E20 or 397 quintillion gold atoms.

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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 .