The total number of sodium atoms in 92 grams of sodium is 4.0 x 10^23 atoms
2.4 x 10^24 atoms
5.5 x 10^25 atoms
6.0 x 10^23 atoms

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave