Answer numbers 1-8
(Don't answer if you don't know)

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

In which of these cases are the two wave points considered to be in phase with each other?