Calvin and Hobbes decided to mix Aqueous Potassium Iodide with Aqueous Lead(II) Nitrate. They observed a Yellow Colored Solid Precipitate Lead(II) Iodide and an Aqueous Potassium Nitrate in solution. WORD EQUATION: FORMULA EQUATION: CHEMICAL EQUATION: TYPE OF REACTION:

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 .

Need ! assume that the variables x and y are directly related. if k = 8, what is the value for each of the following points? be sure and record your data to be used in the following problem. x y k 0.

How does electronegativity changes as we move from left to right across a period