Depends on steam pressure. Take the Perry's Handbook, Chapter 3. Divide the available heat by the difference (enthalpy of saturated vapor at the selected pressure)-(enthalpy of water at ambient temperature) and you have the amount (lbs) of steam produced. Multiply by the specific volume of the...
Hydrogen can be reacted with CO2 (an inexpensive raw matter) to produce synthesis gas (a mixture of hydrogen and carbon monoxide, after purification from residual CO2 and water). Synthesis gas can be used to synthetize a lot of products, from methanol to liquid fuel, through the Fischer Tropsch...