Determine the amount in grams of KCl that exists in 20.3 g of a solution that contains 1.14 % KCl by mass

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

The fact that the total amount of energy in a system remains constant is a(n)

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 .