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Question - Suppose you add the two peptide sequences shown below to the enzyme chymotrypsin in a buffered solution that is composed of entirely of 'heavy' water (H218O)*. After adding the peptides to the chymotrypsin solution, using a mass spectrometer you observe that the mass of peptide 1 has shifted by two mass units (Daltons) relative to its normal mass. The mass of peptide 2 is unaffected. If you add these peptides to the same heavy water buffer without chymotrypsin present, neither peptide shows a mass shift. Explain this result based on what we know about chymotrypsin.
question a chunk of gold with an unknown mass is heated to 163 degrees c and dropped into 38.0 grams of water at 25.0
phytane is a naturally occurring alkane produced by the alga spirogyra and is a constituent of petroleum. the iupac
In a dry cell, MnO2 occurs in a semisolid electrolyte paste and is reduced at the cathode. The MnO2 used in dry cells can itself be produced by an electrochemical process of which one half-reaction is shown below.
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2032?
Which has the greater kinetic energy, an object with a mass of 2.0kg and a velocity of 1m/s or an objecy with a mass of 1.0 kg and a velocity of 2.0m/s. Explain
How much energy (in calories) is needed to heat 12cm^3 of fat from room temperature (25C ) to its melting point (35C)? Specific heat of fat 0.45 cal/(g*C, and the density of fat is .94g/cm^3)
aluminum and oxygen react to form aluminum oxide. How many L of oxygen at 296K and 1.4 atm of pressure are necessary to form 3.25g of aluminum oxide.
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.
A mixture of 1.50 mol of Al and 3.00 mol of Cl2 is allowed to react. How many moles of AlCl3 are formed according to the following balanced equation?
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain
1.0 M aqueous solutions of the following substances are prepared. Which one would you expect to have the lowest electrical conductivity
Problem- A 50.00-g sample of metal at 78.0 degrees C is dropped into cold water.If the metal sample cools to 17.0 degrees C and the specific heat of the metalis 0.108 cal/g. degrees C, how much heat is released
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