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We can maintain a pH difference across a cell membrane under certain conditions. Considering the two sides as a H2O/H+/O2 cell with a pH inside the cell of 7.23 and outside the cell of 7.12, determine the absolute value of the electromotive force difference between the two sides of the cell membrane.
According to Hund's Rule, how many unpaired electrons are in the valence shell of element 10?
Consider the flask apparatus in the following diagram, which contains 2.00 L of H2 at a pressure of 380. torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 300. torr after the stopcock is opened, determine the ini..
Calculate the volume (in liters) occupied by 2.08 moles of nitric oxide (NO) at 5.84 atm and 76°C.
The indicator propyl red has Ka = 3.3 × 10-6. What would be the approximate pH range over which it would change color?
A sample of gas occupies a volume of 50.4 mL. As it expands, it does 125.5 J of work on its surroundings at a constant pressure
a gas stream is entering an absorber is 20mol% CO2 and 80 mol% air. the flow rate is 1 m^3/min at 1 bar and 360 K. when the gas stream exits the absorber , 98% of the incoming CO2 has been absorbed into a flowing liquid amine stream
A 325 mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286 mL and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three signifi..
A solution is made by dissolving 0.0350 mol of HF in enough water to make 1.00L of solution. At 24°C, the osmotic pressure of the solution is .975 atm.
If 15 mL of a 1 M HCl solution is mixed with 25 mL of a .250 M NaOH solution in a process that produces 273 mg of NaCl, what is the percent yield
20 sample of dry ice is added to a 765 flask containing nitrogen gas at a temperature of 25.0 and a pressure of 715 .
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
Complete the table for aqueous solutions of caffeine C8H10O2N4. a. given: mole fraction solven:0.900 find molality, mass percent solvent, Ppm solute b. given: Ppm solute:1269 find molality, mass percent solvent,
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