Fill in the coefficients that will balance the following reaction:
ao Ca +
alCO2 +
33 CaCO3

Calculate the number of molecules present in 0.750 mol of mgo.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

What produces wave a)sound b) heats c)transfer of energy d)vibrations