What is the energy of a wave that has a frequency of 7.0x10^13 Hz?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)