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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?
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. Write down the integral you would need to eva..
Write the ionic equation and net ionic equation for the following reactions. Show all work for each balanced equation a. HCl(aq)+ NaOH(aq) b. CH3COOH (aq) + NaOH (aq)
if a 189-mg piece of gold density 19.32 gcm3 is hammered into a sheet measuring 2.4 ft 1.0 ft what is the average
Question- Bromobenzene is converted to a compound with the molecular formula C7H7Br in the reaction scheme below. Draw the structures of the product and the two intermediates, and identify the reagents in each of the three steps.
• How does the magnitude of Ka (or pKa) affect the equivalence point volume and why? Briefly explain your reasoning.• How does the magnitude of Ka (or pKa) affect the equivalence point pH and why? Briefly explain your reasoning.
Assuming that the container is completely full, that the temperature is 20.7oC, and that the atmospheric pressure is 1.2atm, calculate the percent (by volume) of air that would be displaced if all of the liquid nitrogen evaporated
The substance Y solution now has a concentration of 25 mg/L. Explain what is the mass of substance Y that is adsorbed to the GAC. Explain what is mass to mass ratio of the adsorbed substance Y to GAC in mg/kg at this equilibrium concentration
Calculate the work(in kilojoules) done during a synthesis of ammonia(see reaction below) in which the volume contracts from 8.6L to 4.3L at a constant external pressure of 44atm. (Note: be careful what units you use, SI units needed) N2(g) + 3H2(g..
An electrochemical cell has a half-cell in which a piece of wire is dipped into a solution that is 2.0 M in KBr and 0.050 M in Br2. The other half-cell has magnesium metal immersed in 0.38 M Mg2+ solution.
Question- What BOD (in mg O2 /L) could an aeration tank with dimensions: length= 50m; mixed liquor depth= 2m and width = 5m at a small waste water treatment plant receiving 0.5 MGD of sewage per day treat if the F/M is 0.1g BOD/day/g MLSS and MLSS..
What is the solubility of Pb3(PO4)2 in a 0.025 M Na3PO4 solution? The solubility product for Pb3(PO4)2 is 1.0 x 10^-54.
How much 0.20mol/L NaOH must be added to this buffer to raise the pH to 5.1. If the same amount of 0.20 mol/L NaOH were added to 250mL of deionized water, what would the new pH be
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