2. ¿explique cual de los siguientes agentes oxidantes es más fuerte y cual es más débil, kmno4, k2cr2o7, cro3 en ácido acético glacial, cro3 en piridina?

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 have the greenhouse gasses increased from the year 2000 to 2018

How much carbon is stored in the atmosphere as co2