How many grams of KNO3 are needed to make 1.50 liters of a 0.50 M KNO3 solution?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone