Compute how many kilograms of h it takes to electrify

Reference no: EM13173984

A power plan burns hydrogen gas (H2) to produce electricity. The plant generates 8*10^2 megawatts continuously. (1 megawatt = 1*10^6 watts, 1 watt = 1J/s) Assume that the plant is 100% efficient. A) Write a balanced reaction for the combustion of H2. B) Calculate ?H°combustion (in kJ/mol) for H2 using the table of standard values and your balanced equation from Part A. C) How much energy does the plant produce in one week? (There are 168 hours in a week) D) What mass of H2 does the plant burn each week? E) An average US household consumes 920 kilowatt hours (kWhr) of electricity each month. Calculate how many kilograms of H2 it takes to electrify an average home for a month. Assume there are 30 days in a month. (1 Whr of electricity = 3600 J) Standard Values: O2 (g) --> 0 H2 (g) --> 0 H20 (g) --> -242 CO2 (g) --> -393.5 CH4 (g) --> -75 What volume of 0.10M NaOH must be added to a solution that contains 0.2M HF and 0.2M NaF to reach a pH of 5.3? The volume of the solution is 20.0 mL and Ka = 7.2*10^-4 for HF. (Hint: Use moles in the Hendersen Hasselbach equation instead of molarity)

Reference no: EM13173984

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