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A) Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 650 watts/sq meter at 50 meters altitude. How much electricity (kwH) can the turbine generate per year?
b) Wind densities greater than or equal to 500 watts/sq meter at an altitude of 50 meters are present on 1.500 percent of the land area of the US. If, on average, wind farms contain 8 turbines/sq km, how much electricity (kwH/yr) could be generated from these wind turbines? (The area of the US is 7,827, 989 sq km).
The heat of vaporization of water =40.66 kJ/mol at 100 °C. Compute the quantity of heat that is absorbed/released when 9.00 grams of steam condenses to liquid water at the temperature of100 degree celsius.
What is the pH of the solution when 50 grams of Ca(OH)2 was added to 1 liter of water? Ksp of Ca(OH)2 = 6.5 x 10^-6
If the actual yield is 220.0 g and the theoretical yield is 275.6 g then what will be the percent yield of ferrous sulfide.
The _______ of a titration occurs when the indicator changes color.
Calculate the molar enthalpy of combustion of Phosphorous when this combustion process was carried out under the constant pressure?
Find out the Celsius temperature of 2.49 mol of gas contained in a 1.00 L vessel at 1.8 atm pressure.
Calculate the enthalpy change for the dissolution of NH 4 NO 3 and expree your answer in units of kJ/mol.
Compute the enthalpy change, , for this reaction per mole of (Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] )
using a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c
A commercial plant is to treat 320 m3/hr of feed consisting of 50 % A, 50% inerts at 25 atm and 350ºC to obtain eighty percent conversion. Determine how many 2-m lengths of 2.5 cm ID pipe are required?
Determine how many grams of solute would separate if the quantity of the solvent is 129 grams if a saturated solution of ammonium nitrate at 75 °C is cooled to fifteen degree Celsius?
Chemical Kinetics - Show that only the reactants of the slow step of a reaction are found in the rate law of the reaction - which of the two steps is slower and which substance (if any) is probably an unstable intermediate?
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