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You are asked to prepare a buffer with a pH of 4.04. calculate the volumes of 1.00M solutions of formic acid (HCOOH) and sodium formate (NaHCOO) needed to produce 200mL of the buffer
The vapor pressure of pure CCl4 at that temperature is 143 torr and the vapor pressure of the pure unknown is 85 torr. What is the molar mass of the unknown?
Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most important for providing a stable and selective crystal structure
distinguish between an organic molecule that is dextrorotary and one that is levorotary.
What is the theoretical yield (in mg) of sodium bisulfite adduct of cyclohexanone, assuming that you convert all the starting material to it
Determine the half-life for the reaction in Part B using the integrated rate law, given that the initial concentration is 1.75molxL^-1 and the rate constant is 0.0020 molxL^-1x s^-1 .
Methane has a Henry's Law constant (k)of 9.88 × 10-2 mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH4 will dissolve in 3.00 L of benzene if the partial pressure of CH4 is 1.48 atm?
the rate constant of some reaction double with 10 degree rise in temperature. assume that a reaction takes place at 295
moles of an ideal gas at 300K are expanded isothermally from an initial P of 4 atm to a final P of 1 atm. Calculate q, w, DeltaU, DeltaH for the process.
explain how the ligands of F-, NH3 and CN- bonded to CO3+ can result in a green, yellow-orange, and pale yellow color for these compounds, respectively
Calculate the molality and molarity of an NH3 solution made up of 28.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
calculate the composition of the vapor phase at 25 °C if the vapor above the liquid phase is composed only of 1-propanol and 2-propanol
Compute the amount of heat evolved in the oxidation of 32.0 grams of Fe at the temperature 25 oC and pressure 1 atm pressure ( ΔHfo(Fe 2 O 3 ,s) = -824kJ/mol)
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