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Explain what pressure of carbon dioxide is necessary to keep the carbon dioxide concentration in a bottle of club soda at 0.35 M at 25 degrees Celsius?
How much more extra of the insufficient reactant would be needed to completely react with the excess remaining of the other reactant. (N = 14, H = 1, Cl = 35.5)
The Ka of HNO2 is 7.1 x 10^-4. Use this to find the volume (mL) and pH of 0.0588 M KOH needed to reach the equivalence point(s) in titrations of 28.5 mL of 0.0380 M HNO2.
the temperature of the surrounding remains essentially constant during the process. Calculate deltaSsystem, deltaSsurroundings and deltaStotal.
0.554g sample that is a mixture of oxalic acid, H2C2O4 and another solid that does not react with sodium hydroxide. If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point
How many potassium ions must a cell lose in order to produce a membrane potential of - 95 mV for potassium? How does this compare to the number of potassium ions within the cell
how much energy would be required to ionize 5.18 mg of nag atoms to nag ions? the first ionization energy of na atoms
before addition of any HCl (b) after addition of 25.0 mL of HCl (c) after addition of 50.0 mL of HCl (d) after addition of 100.0 mL of HCl
The mass fraction of liquid phase of the substance is 60%. What are the pressure, mass density, internal energy and enthalpy of the entire system?
Explain which of the subsequent three compounds is the most likely to be amenable to purification by sublimation- polyethylene, menthol, or phthalic acid. Explain why one is more amenable than the other two
What is the Gibbs energy difference across the membrane at 37°C. The difference in concentration must be sustained by coupling to reactions that have at least that difference of Gibbs energy
Sodium bicarbonate and sodium carbonate dissolved in water use to make buffer solution. The Ka value of carbonic acid is 4.37 x 10^-7 and sodium carbonate is 4.68 x 10^-11.
If carbon tertrachloride is added to the systems, describe the effects of chain transfer with carbon tetrachloride on the polymer composition and average molecular weight.
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