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.
At the Shuttle's maximum speed of about 30,000 km/hr, it would take more than 16 years to reach Pluto.   The New Horizons spacecraft was launched by NASA in 2006 and reac â¦ hed a new record velocity for spacecraft, more than 58,000 km/hr.It was further accelerated by a gravity assist from Jupiter in 2007.he space shuttle gets up to a speed of about 4 miles per second maximum which â¦ is enough to then coast in earth orbit for many days but not enough to get more than a few hundred miles up.