What are the steps of preparing a 2M solution of NaOH

(Its talking about molarity)

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

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?