Calculate the energy of the orange light emitted, per photon, by a neon sign with a frequency of 4.78 × 1014 Hz.

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

One does not belong why? ice, gold ,wood ,diamond and table salt

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.