What is the correct conversion factor by to which to multiply to convert moles of hyrdogen peroxide (h2o2) to moles of oxygen (o)

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

This statement about matter and its behavior is best classified as a