Suppose that the exhaust stream of an automobile has a flow rate of 2.62 L s−1 at 650 K and contains a partial pressure of NO of 18.5 mbar .What total mass of urea is necessary to react completely with the NO formed during 7.7 hours of driving?

there is none because earth is stationary and flat.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.