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In its crystalline form, hemoglobin has a spherical shape with a radius of 2.75 nm. In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule?
The equilibrium constant at 25°C is 8.9 × 10-12. One hundred grams of magnesium hydroxide is added to 1.00 L of water and equilibrium is established.
Suppose you are given 150 mg of an unknown mixture that contains three compounds, and you are told to separate the compounds using column chromatography
A gaseous mixture of O2 and Kr has a density of 1.102 g/L at 420 torr and 300. K. What is the mole percent O2 in the mixture?
At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) reverse reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases.
An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu.
The excess I2(aq) left over from the above reaction was titrated with 11.37 mL of 0.0105 M thiosulfate (S2O32-) as follows: I2(aq) + 2S2O32-(aq) → 2I1-(aq) + S4O62-(aq)
Assuming that the peaks are Gaussian, calculate the % resolution, i.e. calculate the area under the first peak which lies to the left of half way between the two peaks.
Assume that the maximum number of ATP's is produced (38). At pH 7, and in the presence of excess Mg2+
The activation energy of a certain reaction is 50.0 . At 22 , the rate constant is . At what temperature in degrees Celsius
Calculate the molar solubility of AgCl in a solution made by dissolving 10.0 g of CaCl2 in 1.50 L of solution.
A certain substance has a heat of vaporization of 39.17 Kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times higher than it was at 325k?
Dichloromethane is produced from two successive chlorination reactions: the chlorination of methane to methyl chloride followed by the chlorination of methyl chloride to dichloromethane
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