15. Which statement accurately describes the relationship between mass and weight?
O A. An object with twice the mass of another object will weigh half as much.
O B. An object with twice the mass of another object will weigh four times as much.
O C. An object with twice the mass of another object will weigh twice as much.
O D. An object with twice the mass of another object will weigh one-fourth as much.

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).

Sink to the bottom. addition of potassium nitrate past it’s dissolution capacity at a particular temperature will cause the extra to just sink to the bottom of the glass.however, if you were to raise the temperature of the solution prior to dissolving it, and then slowly decrease the temperature after the dissolution, you would create a “supersaturated” solution - a solution that has more solute dissolved into it than should be allowed. if you add any extra solute past this, the entire solution would “crystallize,” and this is how you get those cool videos on youtube.

Heat is how much heat energy something has and temperature is a measure of how hot something is.