How many grams of hydrogen gas would be required to produce 100.0 g H2O

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

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?