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Using your knowledge of ph and solubility, predict what the charge would be on the amino acid phenylalanine at ph 2.0, 13.0, and at its isoelectric point of ph 5.48. Include drawings of each of the three ph cases for phenylalanine, and be certain to include the appropriate locations for charge on your molecular structure.
How much heat is lost when a 640 g piece of copper cools from 375 oC, to 26 oC? (The specific heat of copper is 0.387 J/g . oC)
The normal boiling point of actone is 56.2 C and the molar heat of vaporization is 32.0 kJ/mol. At what temperature will acetone boil under a pressure
a total of 2.00 moles of a compound is allowed to react in a foam coffee cup that contains 127g of water. the reaction
A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H20.
One mole of an ideal gas with a volume of 1.0 L and a pressure of 5.0 atm is allowed to expand isothermically into an evacuated bulb to give a total volume of 2.0L. Calculate w and q. Also calculate qrev for this change of state.
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
what is the molar mass of a gas that has a density of 1.02g/L at 0.990 atm pressure and 37 o C
The reaction that produces the water gas mixture is as follows- C(s) + H2O(g) - CO(g) + H2(g) This reaction requires an input of 131 kJ of heat for every mole of carbon that reacts.
A solution contains one or more of the following ions: Pb 2+, Ca 2+, and Zn 2+. When sodium chloride is added to the solution, a precipitate forms
in the reaction ag -gt 2 bg cg the total pressure increases while the partial pressure of ag decreases. if the initial
What mass of oxygen is required to react completely with 25.0g of C6H14? What mass of carbon dioxide can be produced from 25.0 g of C6H14 and excess oxygen
If a 50.0 g object needs 1,145 Joules to increase its temperature by 10.0 oC, what is its specific heat capacity?
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