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A 25 ml sample of .10M sodium acetate is titrated with .10M HCl. What is the pH after the addition of 35ml of HCl? (Kb of CH3CO2=5.6e-10)
Describe how a linear sequence of amino acids gives rise to the three-dimensional structure of proteins. Detail the significance of this structure, how it may be modified, and the results of such modification
under certain conditions, the combustion of charcoal (C) in the presence of o2 forms carbon monoxide (CO) according to the given balance equation.
Calculate the energy in joules and calories required to heat 24.0g water from 20.0C to 27.7C
Explain the following given for each statement in determining the sequence of peptide with concise (short) but complete response. you must state the specificity of each statement implication in determining the sequence of octapeptide.
What is the pH at the equivalence point when 30.0 mL of 0.20 M HCl are titrated with 0.45 M NaOH at T = 298 K? Kw = 1.00 x 10-14.
Half-life equation for first-order reactions: (the 1/2 in t1/2 is a subscript) t1/2=0.693/k where t1/2 is the half-life in seconds (s) , and k is the rate constant in inverse seconds (s^-1).
An X-ray photon of wavelength 0.978 nm strikes a surface. The emitted electron has a kinetic energy of 975 eV. What is the binding energy of the electron in kJ/mol
In one experiment, 11.5 g of NO formed when 112.4 g of each reactant was used. What is the highest percent yield of N2 that can be expected?
The % of antifreeze should be raised to twenty five percent by draining some of the mixture and adding 100% antifreeze determine how much mixture should be drained?
If equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield.
What is the minimum volume of 2.85 mol/L HCl(aq) required to dissolve 12.1 g Zn metal? The atomic weight of Zn is 65.39 g/mol. The unbalanced chemical equation for the reaction is Zn(s) + HCl(aq) --> ZnCl2(aq) + H2(g)
aliquot of the HCl solution required 13.98 mL of 0.08485 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.08 mL. Balance the reaction below and determine the percent WO3 in the ceramic sample.
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