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RNA is readily hydrolyzed by alkali, whereas DNA is not. Why? (Think of pH required for nucleophile generation)
A container consists of CO2 gas at a temperature of 15 C and at a pressure of .990 atmospheres. The volume of the container is 500 mL. How many grams of CO2 would be in the container?
Consider a molecule with spacing between two energy levels of 0.250 kJ mol-1. Calculate the wavelength and wavenumber of the photon that would be needed to lead to an excitation between these two levels.
what mass of solid sodium formate (of mw 68.01) must be added to 105 ml of 0.55 mol/l formic acid(HCOOH) to make a buffer solution having a ph of 3.96? ka=0.00018 for HCOOH
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below.
An unknown compound contains only carbon, hydrogen, and oxygen(CxHyOz). Combustion of 5.50g of this compound produced 8.07g of carbon dioxide and 3.30g of water.
What are the potential effects of exposure to nitric acid? Consider all different modes of exposure listed on the MSDS.
For a protein with a molar mass of 1 x10 6 u calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C
In tables of thermodynamic data provided in chemistry books, one finds delta Hf, delta Gf, and delta S listed. Briefly explain why the entropy data are supplied as S
If 1.50 g of X reacts with 3.54 g of M to produce 4.22 g of a compound with the formula M4X3, and the atomic mass of M is 48.5 amu.
decomposition of N2O5 to NO2 and O2 at 70 degree celsius is 6.82 x 10^-3 s-1. Suppose we start with 0.300 mol of N2O5(g) in a .500L container. How many minutes will it take for the quantity of N2O5 to drop to .030 moles?
X-ray radiation is associated with transitions in which inner core electrons are being ejected from the atom. Suppose a photon of wavelength 240 pm ejects an electron from the inner shell of an atom and it emerges with a speed of 13.0 Mm s-1.
Calculate the entropy change associated with the isothermal expansion of 5.40 mol of ideal gas atoms
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