In the above picture a solid aluminium rod is being heated by a flame. Explain the main reason why Glob of wax A melts first.
TE from the candle moves through the air and Glob A feels the hear first
TE from the candle transfers particle to particle by touch through the rod to the wax
TE from the candle is carried by particles as they flow though the rod to the wax
TE travels up as heates to the wax

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 .