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Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?
Asparagine and Glutamine.
Leucine and Glycine.
Histidine and Lysine.
Aspartate and Glutamate.
Serine and Threonine
A solution contains 25 mmol of H3PO4 and 10. mmol of NaH2PO4. What volume of 2.0 M NaOH must be added to reach the second equivalence point of the titration of the H3PO4 with NaOH?
How much heat is required to change a) 32.6 g of ice at 0.0 C into water at 0.0 C b) 32.6 g of water at 100.0 C into steam
Compute the boiling point elevation of a salt water solution that contains 5.90 g of NaCl dissolved in 109 ml of water. Enter the number of degrees celsius that the boiling point will be elevated.
In the 1980s, there was an international agreement to destroy all stockpiles of mustard gas, ClCH2CH2SCH2CH2Cl. When this substance contacts the moisture in eyes, nasal passages, and skin
How much heat is required to take a 15.0 g sample of ice with an initial temperature of 0.00oC and raise it to a final temperature of 75.0 oC.
A paint company mixes it's paint with water to create more paint per gallon. They currently have ten gallon jugs which contain 10% water.
In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
Determine the enthalpy change for the oxidation of ethanol to acetic acid, CH3CH2OH() + O2(g) -> CH3COOH() + H2O() given the thermochemical equations below.
Explain why Î"G can only be used to determine the spontaneity of a reaction. Be very detailed in your answer.
smaller dipole moment than formaldehyde, H2C=O, even though it contains electronegative chorine atoms in place of hydrogen. Explain
What common mono-positive ions will coprecipitate with barium sulfate in the determination of soluble sulfate
How much heat is required to warm 221 g of ice from -46.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
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