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Two manufacturing plants need 1.0e4 kg of Al each week. One plant produces the Al from bauxite (Al2O3), whereas the other gets its Al from recycled cans. Given that recovery of recycled Al consumes only 5% of the energy it takes to manufacture Al from bauxite, what is the dollar difference in energy costs for the two plants? For this problem you should only consider the Al energy costs. Assume each company pays $0.04 per kwhr and the ?Hf for Al2O3 is -1676 kj/mole. Finally, you will need this conversion factor: 1 watt-hr = 3600 joules.
A. $163,928.B. $6902.C. $6557.D. $3451.E. $3279.
a balloon is filled with a gas. the baloons volume is 2.1 l and the gas pressure is 1.7 atm. then the balloon is placed
Explain why two layers formed when 3 M NaOH was added to the ether solution after the initial separation. What solvents do the two layers represent? Which solvent forms the upper layer? Why?
An aqueous solution is 5.50 % by mass ammonia, NH3, and has a density of 0.975 g/mL. What is the mole fraction of ammonia in the solution?
A sample of oxygen that occupies 1.00 × 10-6 mL at 575 mm Hg is subjected to a pressure of 1.25 atm. What will the final volume of the sample be if the temperature is held constant
for the following processes at 700 degrees celcius what is the partial pressure of each gas if the total pressure is
So what have we discovered? What is the elemental identity? Show work in detail please. Displacement - 0.00202 L
Use Le Chatelier's principle to explain the color change which you observed after the addition of distilled water to the equilibrium mixture above.
A solution of NaCl dissolved in water will have 1) a lower freezing point than pure water 2) a lower boiling point than pure water 3) larger crystals when frozen than pure water 4) a lower density than pure water 5) a higher freezing point than pu..
Write balanced chemical equations and net ionic equations of KOH reacting with the following compounds (a) (NH4)2SO4, the reaction mixture is heated
added 5 mL of 0.10 M H2SO4 instead of 5mL 0.10 M of HCl calculate the ph of the solution using henderson-hasselbalch
The Balmer series of transitions for the hydrogen atom result in absorption of photons that all originate from the n = 2 level. What are the longest and shortest wavelength photons in the Balmer sequence?
A sample of gas has an initial volume of 13.8L at a pressure of 1.26 atm If the sample is compressed to a volume of 10.8L, what will its pressure be?
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