What does the symbol -δhfus indicate in a phase change?
a gas is being formed.
a gas is being liquefied.
a solid is being formed.
a liquid is being vaporized.

When balancing a chemical equation:

Define the kinetic molecular theory

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated