Alaser dazzles the audience in a rock concert by emitting red light with a wavelength of 701 nm . calculate the frequency of the light.

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?

Which statement is true about ionic compounds?

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?