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What do scientists mean when they describe a "single-stranded" versus a "double-stranded" molecule of DNA? Can DNA go back and forth between being double and single-stranded? If so, explain how, and does its sequence change?Will DNA replication process always create identical strands? Why or why not? What would the consequence of a "mistake" be?
Identify the single-displacement reactions among the following: 1) HI(aq) + NaOH(aq) --> H2O(l) + NaI(aq) 2) Pb(s) + 2 AgNO3(aq) --> Pb(NO3)2(aq) + 2 Ag(s)
Carbonic acid then ionizes in water (Ka1 = 4.5× 10-7). Ignoring Ka2, estimate K for the overall process by which CO2 and H2O form H and HCO3-.
What is its fate as cooling occurs? To help address the question, calculate the equilibrium constant at 298 K and 1300 K for each reaction: ½ O2(g) + NO(g) NO2(g)
h2g n2g --gt 2nh3gwhat volume of ammonia can be produced from 2.0l of nitrogen gas and 3.0l of hydrogen gas? assume
the reaction of peroxydisulfate ion s2o82- with iodide ion i-is s2o82-aq 3i-aq 2so42-aq i3-aqfrom the following data
describe and explain the possible effects on your results of the following experimental errors or variations.
2 components mixture give the tlc shown when 1:1 mixture of hexanes:ethyl acetate is used as the developing solvent which components is more polar and how can you tell?
A certain weak acid, HA, with a Ka value of 5.61*10 raised to negative 6 is titrated with NaOH. A solution is made by mixing 7.00 mmol (millimoles) of HA and 1.00 mmol of strong base. What is the pH? I figured out the pH was 4.47
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s
Question- Part a) Write the equation for the combustion of two moles of methanol with oxygen into carbon dioxide and liquid water. Part b) Calculate the delta H, delta S, and delta G at 25 degrees Celsius and delta G at 100 degrees Celsius for the r..
A sample advertised as pure fructose obtained at a health food store, is analyzed as follows: a 22.5 gram sample is dissolved in 50.0 mL distilled water and the solution is allowed to slowly equilibrate for one hour.
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K. If the H2 is oxidized in a fuel cell with maximum efficiency to drive an electric version
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