In the backyard calorimetry lab I had 189.5 grams of water in my thermos. The water started out at a temperature of 16.4 degree straight C. After a few minutes the water cooled to 8.9 degree straight C . How much thermal energy did the water use to melt the ice cube?

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

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?

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.