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the heat flow due to the mass motion of a fluid or gas is accomplished by conduction
convection
radiation
all of the above

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

What energy is it when you flip on a switch on a lamp

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .