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Which of the bonds that maintain the conformation of proteins are most sensitive to disruption by high concentration of ethanol? Explain
The addition of thioacetamide to an acidic solution of this compound results in the precipitation of a solid that forms a deep blue solution when added to aqueous NH3. Identify the chemical formula for this compound.
Saturated sodium chloride. describe what happens when 12 M HCl is added to saturated (5.4 M) NaCl. Calculate [Cl-] in the original solution and after the addition of the 12 M Hcl (before any precipitate forms).
What would be the pH of a solution prepared by combining equal quantities of NaH2PO4 and Na2HPO4? Explain. 2. Sufficient strong acid is added to a solution containing
How many moles of Fe(NO3)3 are required to prepare a 354.6 mL solution that is 9.737 moles/liter of NO3-?
A 15.0-g sample of aluminum (specific heat = 0.902 J g-1 oC-1), initially at 95.0oC, is immersed in a 35.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 44.2oC, in an insulated container.
what is the molarity of the solution formed by mixing 0.20 mol of sodium hydroxide with enough water to make 150 ml of solution
The standard enthalpy change for the reaction below is -905.4 kJ (for the reaction as written). What is the standard enthalpy of formation of NO(g)
A 20.5 g sample of protein dissolved in water to prepare 500ml solution shows an osmatic pressure of 3.72 torr at 27 degrees C. Estimate the molar mass of the protein
The heat of combustion for ethane C2H6 (molar mass=28.0g/mol) is 52.0 kj/g. How much heat would be released if 14g of ethane undergo combustion. How much heat would be released if 2.75 moles of ethane undergoes combustion
What volume of .305M AgNO3 is required to react exactly with 155mL of .274M Na2SO4 solution
Which elements exist as three-dimensional, solid structures in their most stable states under atmospheric conditions. Check all that apply. a.)Cl b.)Hg c.)Si d.)Br e.)Mg f.)O g.)Kr h.)I
Which of the following is the most effective buffer system for a pH value of 10.15. HCO3- / CO32- (Ka = 4.7 x 10-11) I have no idea why
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