A sample of mercury metal is cooled from 52.5C to 25.0C. In the process, 766J of heat is released. What is the mass of mercury that was in the sample? The specific heat capacity of mercury is 138J/kgC.

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

Which best represents the law of conservation of mass ?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island