In order to understand why some combinations of alkyl halides and nucleophiles give a substitution reaction, whereas other combinations give elimination, and still others give no observable reaction, we must investigate systematically the way in which changes in reaction variables perturb the course of the reaction.
It's true - the ISS moves at about 17,000 mph (~28,000 kph). Now for your other questions: 1. When it's not using its onboard engines to adjust its orbit, the station is in free-fall*. This means that gravitational interaction with the earth maintains the station's orbit, and thus its speed.
Gee, that's an easy one! The shuttle or anything in low earth orbit has to travel about 17,500 miles per hour, and that is roughly ten times the speed of a rifle bullet. If you think a rifle bullet is moving fast -- just imagine the orbiter.It's moving about ten times that speed.So that should give you some idea.he shuttle or anything in low earth orbit has to travel about 17,500 miles per hour, and that is roughly ten times the speed of a rifle bullet. If you think a rifle bullet is moving fast -- just imagine the orbiter.