Atotal of 0.829 l of hydrogen gas is collected over water at 33.0°c. the total pressure is 794 torr.
if the vapor pressure of water at 33.0°c is 13.2 torr, what is the partial pressure of hydrogen?

Iknow the answer is a but i don't know why

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.