what is the molecular structure of polypropylene, the arrangement of the atoms within the molecule, the types of bonds that hold the molecules together, and the overall shape of the molecule

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

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?

If two objects at different te,peraure are in contact with each other what happens to their temperature