please answer 8,9,10, and 13 8. Which of these reactions is an example of nitrog
ID: 879570 • Letter: P
Question
please answer 8,9,10, and 13 8. Which of these reactions is an example of nitrogen fixation? A) 2N:0-2N+O 9. The Ostwald process is 9. The Osthrald processis the main method for the manufacture of nitric acid. In the finst step of this process A) nitrogen and hydrogen react to form NHs B) ammonia is burned in O: to generate N: and H:O C) nitrogen and oxygen react to form NO D) nitrogen and oxygen react to form NO. E) ammonia is burned with O; to generate NO and HO 10. Phosphoric acid is the most important of the phosphorus oxoacids. Industrially, phosphoric acid is prepared by A) the Ostwald process. B) the Haber process C) the reaction of phosphate rock with sulfuric acid. D) the reaction of P Oo with water. E) the Frasch process I Ozone (O,) and oxygen gas (O:) are examples of A) isotopes. allotropes. polymorphs D) alloys E) amphoterism. 12. The presence of ozone in the upper atmosphere is important because ace, thus helping to keep the earth O, absorbs outgoing radiation from the earth's surf wam. A) B C) D) O, absorbs harmful solar radiation. O, dissolves in water droplets and is very reactive. O, is a major reactant in photosynthesis. 13. Which of the following will oxidize gold? A) concentrated nitric acid B) concentrated hydrochloric acid C) aqua regia, a mixture of concentrated nitric acid and concentrated hydrochloric acid D) all of the above can oxidize gold E) none of the above can oxidize gold because it is a noble metal and too low on the activity seriesExplanation / Answer
8. B. NH3+ H2O--- > NH4+ + OH- Nitrogen fixation reaction
9. D. Formation of NO
10. C. reation of phosphate rock with Sulfuric acid
13. C .Aqus Regia
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