If 15 gm saturated solution prepared at 30°C is cooled down to 100 what is the amount of salt obtained?

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?