Ice has the density of 0.93 g/cm3, and water has a density of 1.0 g/cm3. will ice float or sink in water?

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.

How many grams are in 68.2 molecules of br2?