The following balanced equation shows the formation of water. 2h2 + o2 2h2o how many moles of oxygen (o2) are required to completely react with 27. 4 mol of h2? 6. 8 mol 13. 7 mol 54. 8 mol 109. 6 mol.

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b

28. the new systematic nomenclature was so ( that many chemists preferred to ( the older trivial names that were at least shorter. at least, that is the ostensible reason. actually, tradition seems to carry more weight than ( with some scientists.

Consider the image seen here. the image, at point y, represents the process of during which a is being produced.