You and a group of your friends are snowboarding on a Saturday. If it takes you 18 seconds to travel down the 200-meter hill going south, what is your VELOCITY in meters per second?

Silver reacts with oxygen to produce silver oxide. (write balanced chemical equation and identify type of chemical reaction.)

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control?

Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?