HELP ME What is the gravitational potential energy stored in a church bell with a mass of 60 Kg hanging in a church steeple that is 20 m high? A. 1200 J

B. 1960 J

C. 235,200 J

D. 11, 760 J

What is i fracture in the crust called when land move up, down or sideways

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 .

On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density