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A sample of dinitrogen pentoxide contains 8.62* 10^14 nitrogen atoms, how many oxygen atoms does it contain?
A gas of unknown identity diffuses at a rate of 83.3 mL/s in a diffusion apparatus in which carbon dioxide diffuses at the rate of 102 mL/s.
What is the change of molar Gibbs energy for the freezing of water at -10C? The vapor pressure of H2O (liquid, -10C) is 286.5Pa. The vapor pressure of H2O (solid, -10C) is 260Pa. At -10C the molar volume of supercooled water
Problem- Air is 21 mole percent oxygen, that is, 0.21 atm oxygen at 1 atm. Suppose the pH of the water is 2.87 and that the concentration of iron(II) in the water is 5.09x 10-5 M, what is the potential of the corrosion reaction under the above con..
Identify the chiral centers with asterisks and label each center as R or S. 5. How might you use 13C NMR spectroscopy to determine if the brominated product is contaminated with some unreacted starting material (during the bromination of trans-cin..
Why would this result in anaerobic metabolism being favored, even when oxygen is available?
20ml of 0.15M H3PO4 is required to neutralize 40ml of a KOH solution. The molarity of the KOH solution is?
(a) What is the pH of this buffer (b) What is the pH of the buffer after the addition of 0.48 mol of NaOH. (assume no volume change) (c) What is the pH of the original buffer after the addition of 0.23 mol of HI. (assume no volume change)
Under what conditions can a good separation be achieved with a simple distillation? Explain what effect each of the following mistakes would have on the success of a distillation.
What is the molar solubility of PbCl2 in 1.0 L of water? You may assume that the ions do not form ion pairs in solution
the radius of a aluminum atom is 143 pm. how many aluminum atoms would have to be laid side by side to span a distance
If 6.40 multiplied by 10-9 mol of 176W emits 1.07 multiplied by 1015 positrons in 1.00 h, what is the decay constant
A 130 mL stock solution contains 1.5 M CuF2. When 13 mL of the stock solution is diluted to 25 mL, what will the concentration of F- ions be?
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