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A steam power plant operates on an ideal Rankine cycle with two stages of reheat and has a net power output of 120 MW. Steam enters all three stages of the turbine at 500°C. The maximum pressure in the cycle is 15 MPa, and the minimum pressure is 5 kPa. Steam is reheated at 5 MPa the first time and at 1 MPa the second time. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the thermal efficiency of the cycle and (b) the mass flow rate of the steam.
The half-life of radon-222 is 3.8 days. How much of a 100 g sample is left after 15.2 days?
Predict the order for increasing binding energies of the C(1s) electron for the following compounds giving your reasoning.
Calculate how many joules are needed to heat and calculate the theoretical volumes of 1.0 M Tris base?
Explain your answer. Could you still identify what those amino acids were? Explain your answer. What can you not do?
Compare your answers with the following: the effective charges on H and Cl in the HCl molecule are +0.178 and -0.178. A. HBr has a smaller dipole moment and a longer bond length than HCl
Separate samples of an aqueous solution of an unknown ionic salt are treated with dilute aqueous solutions of hydrochloric acid, sulfuric acid, and potassium hydroxide. Precipitates are formed in all three cases.
Explain the general idea of the LCAO-MO method.
What is the de Broglie wavelength of a flea midway through its jump? Assume the mass of the flea is4.50×10-4 g and t is moving at 1.00 m/s.
a 0.4 kg aluminum part increases its temperature by 25 degrees celsius. how much thermal energy is transfered to the part by heat?
The remaining white solid in the filter paper has ammonia water poured through it. This turns the precipitate in the filter paper black. The new filtrate is treated with hydrochloric acid (HCl), giving a white precipitate. What metal ion or ions a..
If 3.8 kcal is released by combustion of each gram of glucose, how many kilocalories are released by the combustion of 1.41 mole of glucose?
An unknown salt is either NaF, NaCl or NaOCl.When 0.050 mol of the salt is dissolved in water for form 0.500 L of solution, the pH of the solution is 8.08.
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