Potassium hydroxide (KOH) combines with Calcium carbonate (CaCO3) to make potassium carbonate (K2CO3) and calcium hydroxide (Ca(OH)2). If you are given 118g of potassium hydroxide, what mass of calcium hydroxide should you recover? O A. 105 g ОВ. 148 g O C. 111 g OD. 185 g

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 .