For chemistry, what is a common unit for density?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.