Which one of the following produces hydrogen ions in a water solution? A. Acids
B. Bases
C. Hydroxide ions
D. Chemical compounds

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?