Which of the following describes a solution of 1 gram of salt dissolved in 500 ml of water?
a.) a homogeneous mixture in which salt is the solvent and water is the solute
b.) a homogeneous mixture in which salt is the solute and water is the solvent
c.) a heterogeneous mixture in which salt is the solvent and water is the solute
d.)a heterogeneous mixture in which salt is the solute and water is the solvent

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 .