What is the systematic name and molecular formula of these two:

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?

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa

8. what happens to matter during a chemical reaction