How much lithium is need to produce 10 moles of H2

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

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?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?