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Draw the most probable structure of the tripeptide Ser-Lys-Leu at pH =2, pH = 6 and pH =12.b) , estimate the pI of the tripeptide (use all pK's needed from the pK's table
A patient needs 2.80×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
A gas sample has an original volume of 580 ml when collected at 1.20 atm and 22°C. If a change is made in the gas pressure which causes the volume of the gas sample to become 1.45 liters at 40°C, what is the new pressure
what is the species list when titrating with hydrochloric acid? Aniline (benzenamine) has the formulas C6H5NH2. Its conjugate acid is C6H5NH3+.
Explain a mixture of hydrogen gas and water vapor has a total pressure of 738 mm Hg. If the partial pressure of water vapor is 17.5 mm Hg, Compute the mole fraction of hydrogen in the mixture.
10.0L flask containing 0.200 mol of CH4, 0.300 moles of C2H6 and 0.400moles of C3H8 to 25 degrees Celsius. Calculate the total pressure and partial pressure of each gas.
what is tert-butyl capxylate? how 'bout its molecular structure?
How many grams of H2O (g) are theoretically produced from 1026.9 g of sucrose, C12H22O11 (g), and an excess amount of oxygen? C12H22O11 (g) + O2 (g) → CO2 (g) + H2O (g) (unbalanced)
Explain why the C=C stretching mode gives rise to a rather weak IR band in 1-methylcyclohexane, while in its isomer
calculate the number of moles of nitrogen dioxide that could be prepared from 0.35 mole of nitrogen monoxide and 0.25
hydrochloric acid for neutralization. A 12.0mL volume of a phosphoric acid solution requires 35.1mL of the sodium hydroxide solution for complete neutralization.
A semipermeable membrane is placed between the following solutions. Which solution will decrease in volume? Solution A: 1.31% (m/v) starch Solution B: 7.48% (m/v) starch
A new atom is found that has 3 isotopes with masses of 262, 263 and 265. If the first is 0.17 abundant and the second is 0.41 abundant, what is the atomic mass of the element (give your answer to 2 decimal places).
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