A cube of gold (Au) has a side length of 1.55 cm. If the sample is found to have a mass of 71.9 g, find the density of Au. show work and units

Is a pencil falling to the floor anon contact force, a force, or a contact force

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

Why dose heating increase the speed at which a solution dissolved in water