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A concentration cell consists of the same redox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the unknown concentration for the following cell. Pb(s)| Pb2+(aq, ?)|| Pb2+(aq, 0.1 M)| Pb(s) E = 0.053 V Answer in units of M.
Table salt contains 39.99g of sodium per 100 g of salt. The US FDA recommends that adults consume less than 2.40 g of sodium per day. A particular snack mix contains 1.20 g of salt per 100g of the mix. What mass of the snack can you consume and st..
If the volume of ocean water is 5.4*10^20 contains 4.1 percent sodium chloride ("salt") by mass and the density of the water is 1.86 g/mL.
When 5.0 moles of O2are confined to a 24 liter container at 87 °C, the pressure is 6.0 atm. If the oxygen is allowed to isothermally expand to 36 liters, what is the new pressure?
How many moles of gas are present when you collect 35.83 mL of the gas over water at 25.3?C and 0.97 atm?
The solubility of O2 in water is 6.5 mg/L at an atmospheric pressure of 1.0 atm and temperature of 40 degrees C. Calculate the Henry's Law constant of O2 at 40 degree C. The mole fraction of O2 in air is .209
A certain compound is made up of two fluorine atoms, one chlorine atom, and one phosphorus atom. What is the chemical formula of this compound
What is the net charge on glucose 6 phosphate at pH 7.2? the pK's for glucose-6-phosphate are 0.9 and 6.0.
If the lake has a volume of 1.07×105 cubic meters, what mass, in kg, of CaO must be added to raise the pH to a value of 7.00?
what crystal structure would you predict for a crystal containing fe2+ and f-? with radii 75 and 136 pm
a 31.0-g sample of water at 290. k is mixed with 48.0 g water at 340. k. calculate the final temperature of the mixture
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
Which of the following is NOT a common driving force in displacement reactions? a. precipitation b. evolution of a gas c. formation of a weak or nonelectrolyte d. the transfer of electrons
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