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Which of the following is an RNA codon for protein synthesis?
CGU
GUA
ACG
all of the above
none of the above
Problem- The hydronium ion concentration of a 0.010 M acetic acid solution is 4.2 x 10-4 M. What is the pH of the solution
what is the relative error in the determination of a density for which the accepted value is 0.945 g*cm^-3 and the experimental value
The partial pressures of gas A and gas B, respectively, are 0.263 atm and 0.676 atm. If 0.160 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
The resulting W3 was transferred to 500.0 mL of 1.00 M HCl. A 100.00 mL aliquot of the HCl solution required 10.13 mL of 0.08840 M potassium permanganate (KMnO4) to reach the purple endpoint
Water vapor is another product. Use this information and data from elsewhere in the text to estimate the carbon-to-sulfur bond energy in methanethiol.
A buffer solution is made that is 0.334 M in HCN and 0.334 M in NaCN. (1) If Ka for HCN is 4.0E-10, what is the pH of the buffer solution. (2) Write the net ionic equation for the reaction that occurs when 0.100 mol HI is added to 1.00 L of the bu..
Problem- What is the pH of a solution that is 0.75 M in sodium acetate and 0.50 M in acetic acid? (Ka for acetic acid is 1.85 x 10^-5.)
Draw all of the carbocation resonance structures that result when the tosylate ion leaves from 1-(tosylmethyl)cyclohexa-1,3-diene. Input the radical lone electrons.
Calculate the energies of the first four rotational levels of H^127 free to rotate in three dimensions, using for its moment of inertia I=uR^2, with u= mHmI/(mh+mI) and R= 160 pm.
Sodium borohydride reacts very slowly with ethanol to evolve a gas. Write a balanced equation for this reaction.
What is the change in internal energy (in J) of a system that absorbs 0.603 kj of heat from its surroundings and has 0.903 kcal of work done on it
How many grams of a compound "x" would be extracted by one 40.0 mL portion of ether from a solution of 40.0 mL of water containing 1.0 grams of compound "x"? The solubility of a compound "x" is 10.0/100 mL of ether and 5.0/100 mL of water.
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