Sodium metal is placed in water to produce sodium hydroxide (NaOH)
ions and hydrogen gas (H2)-
Which substance in the chemical reaction is a solid?
a Sodium
b Water
c Sodium hydroxide lons
d Hydrogen vapor

What is the mass of sodium in 3 moles of sodium chloride

What layer of the atmosphere is directly above the troposphere?

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?