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Suppose you found that the elution volume of the hemoglobin (molecular mass 64,000 daltons) was 7.5mL on your column and that the elution volume of a myoglobin molecule (molecular mass 17,000 daltons) waas 11.4mL. Calculate the approximate molecular mass of an unknown protein which had an elution volume of 9.0mL on the column.
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg plus O2 -> MgO
for the reaction P4+S8=P4S10 what is the maximum amount of P4S10 which could be formed from 17.02 g of P4 and .128 mol of S8?
You are given 2.56 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.89 of aspirin. Calculate your percent yield of aspirin
Find the normal boiling point of a saturated solution of LiF at 100C, assuming it undergoes complete dissociation. The solubility of LiF is 230 mg/100 g of water at 100C
If 2.09 g SO2 react with excess oxygen and water, how many grams of H2SO4 are produced?
Calculate the molarity of 736 mL of a solution that contains 153 g of sucrose C12H22O11.
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. Draw the structure of this hydrocarbon. Can you suggest other sources where this material might b..
The surface area of 100 g of glucose > than that of 1 g. give explanation why the solubility does not increase with the amount of solid deposited at the bottom of the flask?
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
30.0 mL of water at 24.5 °C was mixed with 40.0 mL of water at 40.0 °C. If the specific heat of water is 4.184 J/g °C and no heat was absorbed by the calorimeter, then the final temperature is _____ °C. (Report to the proper number of significant ..
Determine ΔHreaction° for: 4H2O (l) + 2 NH3 (g) → 2NO2 (g) + 7H2 (g) using the following two equations: (1) N2 (g) + 3H2 (g) → 2 NH3 (g) ΔH1° = -184 kJ (2) 4NO2 (g) + 8H2 (g) → 2 N2 (g) + 8 H2O (l) ΔH2° = -196 kJ
how many grams of methanol (CH3OH) is required to prepare a 0.112 m solution in 440 g of water? answer in units of g.
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