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Choose one of the iron-sulfur electron transfer proteins described in the text. Please draw the structure of the iron-sulfur active site, indicating the amino acids tethering the FeS core to the protein. Please list the function the protein has (what metabolic chain does it reside, and which proteins does it interact with).
Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ΔH for the reaction will equal the sum of the enthalpy changes for the individual steps
Use the Nernst Equation to calculate Ecell at 25 C for electrolysis of aqueous sodium chloride if the concentration of chlorine in the brine solution is 4.5 M and the partial pressure of Cl2 is 0.001 atmospheres.
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
A solution of ammonia and water contains 4.20×10^25 water molecules and 6.90×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
3.8 g of a hydrocarbon fuel is burned in a calorimeter that contains 234 grams of water initially at 25.00 ?C. After the combustion,the temperature is 26.55 ?C.
A 1.00 g sample of an unknown acid required 17.0 mL of .650 M NaOH to neutralize. What is the molar mass of the unknown acid?
why is it important to standardize NaOH solution instead of taking an accurate and diluting it in a volumetric
Positive reactions were noted in undiluted, 1/2, 1/4. What is the patient's titer.
which element has the greatest density at STP? and why?
A 100.0-L flask contains a mixture of NO2 gas and CO gas. If the concentration of NO2 is 5.5 × 105 ppm, and the total pressure is 790 torr, what is the partial pressure of CO in the flask?
The density of a 50% solution of NaOH is 1.525 g/mL. What volume of a solution that is 50% by weight NaOH is required to make 1 Liter of 0.15M NaOH solution.
If the titration of a 25 mL sample of calcium hydroxide requires 34.45 mL of a 0.100 M HCl, what is the molarity of the base. 1. Determine the conjugate acid-base pairs in each of the following reactions:
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