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Describe the 4 levels of protein structure. Why is shape so important?
Suppose that the microwave radiation has a wavelength of 12.4cm . How many photons are required to heat 295mL of coffee from 25.0 C to 62.0 C ? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J(gxK) , as..
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. (d)The pH at the equivalence point.
During a typical breathing cycle the CO2 concentration in the expired air rises to a peak of 4.6% by volume.
For H35Cl the internuclear distance is 0.1275 nm. Calculate the moment of inertia, I, and Calculate the energies of the first three rotational levels.
A certain reaction has an Eact of 62.3 kj/mol (14.9 kcal/mol) and a frequency factor of 7.15X10^8LXmil-1Xsec-1. use the arrhenius equation to calculate the rate constant for this reaction at 35 degrees c
the wavelength of the emitted photon corresponds to the difference in energy between the two energy levels. What were the principal quantum numbers of the initial and intermediate excited states involved?
When synthesizing benzoic acid, a student used 0.2 mol Bromo Benzene, 0.3 mol Mg and 0.25 mol CO2. Write out the general equations, check limiting reagent and indicate the maximum yield of benzoic acid in moles.
What weight of glycine pKa1 = 2.4 pKa2 = 9.6 and what volume of 1M HCl are required to make a 100ml of 0.3M buffer pH 2.4? What weight of glycine and what volume of 1M NaOH are required to make 100ml of 0.3M buffer, pH 9.3?
Determine the molar mass of the acid and given that the pH at the half way point to the equivalence is 3.86. Calculate the Ka of the unknown acid.
How many grams of NaOH are needed to react with your original mass of C7H6O2 (1.0225) and how many grams of the measured NaOH
3.00 moles of an ideal gas at 27 degrees Celsius expands isothermally from an initial volume of 20.0dm3 to a final volume of 60.0dm3. Compute w for this process (a) for expansion against a constant external pressure of 1.00 x 105 Pa and (b) for a ..
Copper is electroplated from CuSO4 solution. A constant current of 4.00 amp is applied by an external power supply. How long will it take to deposit 1.00 x 10^2 g of Cu? The atomic mass of copper is 63.546.
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