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Draw a tetra-peptide that FPHD at pH 2.0. Clearly indicate with a circle what groups would be charged if the pH was changed to 12.0.
a) Draw a box around the peptide bonds
b) Put a square near carboxyl terminus
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179g/mL , should be used to make 4.95 L of an HCl solution with a ph of 1.5?
calculate the wavelength of the emitted radiation if an electron in a hydrogen atom went from n = 4 to n = 1. in what region of the electromagnetic spectrum(e,g.X-ray, visible, infrared) would this radiation lie?
What would be the freezing point for a 0.35m solution of sodium bromide in water? (Hoff factor = 1.75)
One molecular form of elemental sulfur is a ring of eight sulfur is a ring of eight sulfur atoms. As one molecule of this element is burned to make sulfur trioxide, how many oxygen molecules are used?
what mass of sucrose should be combined with 535g of water to make a solution with an osmotic pressure of 8.60atm at
What is the molar mass when a 12.5855g sample of an unknown compound is dissolved in 32.0000g of water. the resulting solution has a freezing point of -4.3 Kf = 1.858
The vapor pressure of dichloromethane,CH_2Cl_2, at 0 degrees C is 134 mmHg. The normal boiling point of dichloromethane is 40. degrees C. Calculate its molar heat of vaporization.
Another hypothetical molecular compound, Y 2(g), has a bond energy of 750 kJ/mol, and the molecular compound XY(g) has a bond energy of 1500 kJ/mol. Using bond-energy information, calculate ?H for the following reaction:
Gaseous oxygen is held in two separate containers at identical temperature and pressure. The volume of container A is 6.48 L and it contains 0.785 mol of the gas. The volume of container B id 5.78 L. How many moles of the gas are in container B
Joseph Priestley prepared oxygen by heating mercury(II) oxide. The compound HgO is stable at room temperature but decomposes into its elements (Hg and O2) at high temperatures. What conclusions can be drawn concerning DH and DS for this decomposit..
What volume of oxygen is required to burn completely 401 cm3 (centimeters cubed) of butane, C4H10 (All substances are gases measured at the same temperature and pressure.)
If you have 100.0fl of 0.0430uM (alpha)-synuclein solution and 0.0400mg of PC, what is the limiting reactant in the tubule forming the reaction? (760.08106g/1mol PC) (15,400g/1mol(alpha)-synuclein). Want an answer
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