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One function of iron-sulfur clusters and heme cofactors is to participate in electron transfer reactions. Describe how nature obtains a large variation in reduction potentials using these cofactors when the iron atoms can only change between the Fe+2 and Fe+3 oxidation states.
the drops in temperature is measured by 113 degreed celsius when a 55 g sample of a certain metal and it loses heat of
Which of these is a coefficient in this chemical reaction? P4s(s)+5o2(G) p4o10(S)
Initially a mixture contains 0.601 mol each of N2 and O2 in an 7.65-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 at 3900°C. N2(g) + O2(g) 2 NO(g)
optically pure compound was diluted to 800.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -4.85° at 25 °C. Calculate the specific rotation of the compound
calculate the concentration of an NaOH solution if 25.0ml of the solution is needed to neutralize 17.5ml of a 0.419M HCL solution
A chemist decomposes several samples of water into hydrogen and oxygen and weighs the hydrogen and oxygen obtained. The results are: 1) 1.5g H and 12g O 2) 2g H and 16g O 3) 2.5g H and 20g O.
Calculate the percent yield. Mass of crucible after cleaning: 13.4422g.
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.
nbspthe atomic weight of a newly discovered element is 110.352 amu. it has two naturally occuring isotopes. one has a
1. activation energy isa. energy that is lost as heat.b. difference in energy between reactants and products.c. energy
what is the ph of a phosphate buffer when h2po4-140mm and hpo4-23omm? assume the pka for this titration is
What is the silver ion concentration in a solution prepared by mixing 373 mL of 0.366 M silver nitrate with 383 mL of 0.563 M sodium chromate?
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