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Hypothetical protein: the positive charged guanidinium group of R21 was with in 2.3A of the side chain carboxylate of D156. will the pka of the carboxylic acid will be different from that of free aspartic acid (with a pka of 3.5?
a solution is prepared by adding 30.00 g of lactose milk sugar to 110.0 g of water at 55 degc. the partial pressure of
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot.
calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.3 electron volts.
A sample of ammonia gas was allowed to come to equilibrium at 400 K.2NH3(g) ↔ N2(g) + 3H2(g) At equilibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M, and the concentration of NH3 was 0.430 M.
Show why the transfer of heat from an object with lower temperature to an object with higher temperature violates the second law of thermodynamics.
depict the hydrogen bonding three water molecules in a
A 355 mL can od diet soda contains 55 mg of sodium. How many gallons of diet soda must be consumed in order to ingest 1.0 lb of sodium
Compute the vapor pressure at 25 °C if it is given that the density of H 2 O=0.9971 g/mL , vapor pressure of H 2 O=23.76 torr, molar mass of sucrose, = 342.3 g/mol,
Consider the following reaction: 3CaCO3 + 2FePO4 = Ca3(PO4)2 + Fe2(CO3)3 a) which of the following reagents is the limiting reagent?
At 10 degrees, Kc = 56.3 for the reaction below. H2 + Cl2 --> HCl
what is the solubility of silver chloride in gl ksp1.6x1010 in a 6.5x10-3m silver nitrate
What is the reason for using activated carbon during a recrystallization. Why is gravity filtration and not suction filtration used to remove insoluble suspended impurities and charcoal from a hot solution
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