HCIO4 is identified as what acid

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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 .