Aray in the emission spectrum has a wavelength of 3.10 x 1014 meters. given that the speed of light is 2.998 x 108 m/s, what is the frequency of the ray?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4