Base your answer to the following question on the topographic map below and on your knowledge of Earth science. On the map, points A, B, C, and D represent surface locations. The dashed line between points C and D represents a hiking trail. Elevations are in feet (ft). The gradient between location A and location B is approximately... * Captionless Image
0.04 ft/mi
25 ft/mi
40 ft/mi
50 ft/mi

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen