Convert 7.82 x 1024 molecules of C2H2 into grams of C2H2- O 338 g C2H2
O 78.2 g C2H2
O 13.0 grams C2H2
0 291 g C2H2

This drawing shows a human body system. what is the primary function of this body system?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?