:( How are the processes of fluorescence, bioluminescence, phosphorescent, and chemiluminescent similar/different? (4 sentence explanation)

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

How can you use chemical equations to predict the products of the reaction you can carry out?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.