Wax melts when it is heated. Which most likely describes what is true of the result of this reaction? A. The bonding of the atoms is not the same before and after the change.
B. The wax has the same density before and after the change.
C. The same amount of wax exists before and after the change.
D. The wax cannot be changed back into a solid.

How do i turn 2 s into one in the products

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 .

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?