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suppose that cells are grown on amino acids that have all been labled with 13C at the alpha carbons. identify the atoms in cytosine and guanine that will be labled with 13c. justify your answer by drawing the corresponding reactions.
Explain why when the thermodynamic reaction is added to water , the reaction is more vigorous than when the kinetic product is added to water.
A sample of arabinose, C5H10O5, contains 0.6000 moles of the substance. How many carbon atoms are in the sample?
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.
Explain, phenomena in terms of atomic structure and behavior. When you lightly bump into a car, why does it dent and not create a hole.
When 4-hydroxybutanal is treated with methanol in the presence of an acid catalyst, 2-methoxytetrahyrofuran is formed. Show the mechanism for this reaction.
CH4(g) + 2 O2 --> CO2(g) + H2O(g) suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. what is the limiting reagnant?
An analysis of fatty acids is desired. These fatty acids have boiling points in excess of 275O C. The sample is extracted with methanol to obtain a solution that only contains the fatty acids.
A 10 mL sample of a solution of Pb(ClO3)2 was diluted with water to 21 mL. A 10 mL sample of the dilute solution was found to contain 0.021 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
What mass of sucrose should be combined with 514 g of water to make a solution with an osmotic pressure of 8.85 atm at 295 K? (Assume the density of the solution to be equal to the density of the solvent.)
When limestone (which is principally CaCO3) is heated, carbon dioxide and quicklime (CaO) are produced by the reaction CaCO3(s)?
Draw the mechanism for each reaction you will do today. Pyridinium tribromide releases molecular bromine, so molecular bromine is the brominating agent.
The concentrated sulfuric acid is 98.0 percent h2so4 by mass. the density of the solution is 1.83 g/ml. the molar mass of h2so4 is 98.08 g/ml.What is the mass of h2so4 in 100.0g of concentrated sulfuric acid solution?
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