You are about to undertake an experiment to determine the atomic mass of an element that you recently discovered and named Beanium. Research has verified the existence of 3 isotopes of this new element, which are called: LIMA-49, KIDNEY-51, and PINTO-54. Required:
Use the sample provided to determine the % occurrence of each isotope and then calculate the atomic mass of your element.

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 .