A gas mixture has a total pressure of 700 Torr and 0.5-mole fraction of nitrogen. The partial pressure of nitrogen is .

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line