The experimental mass was 51.5 grams and the theoretical mass was 50 grams. what was the percent error? show your work below. round your answer to two digits.

Which statement best explains the relationship between an area is geography and the temperature of its surface water

Why is the melting of ice a physical change ?

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 .