A 255 sample of nitrogen (N 2 ) was collected over water at 21 degrees C at a pressure of 745 mm Hg. Calculate the moles of the gas. Calculate the mass of the gas

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory