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Into which groups are the nitrogenous bases that form DNA and RNA classified?
Briefly explain the criterion employed in their classification.
A 0.24ml sample of a weak acid with an unknown pKa was combined with 12.0ml of a 3.20M KOH and the resulting was diluted to 1.500L. The measured pH of the solution was 3.75. What is the pKa of the weak acid
calculate Auto-thermal reforming material balance for the plant ( hand calculation as well as summary table use Autothermal reforming technology )
Calculate the free energy change for the reaction at 20?C. Express your answer using four significant figures.
if 50.0 g of copperi oxide and 25.8g of copperisulfide are initially present determmine the teoretical yield of copper.
The compound dichlororodifluoromethane (CCl2F2) has a normal boiling point of -30C, a critical temperature of 112C, also a corresponding critical temperature of 40 atm. If the gas is compressed to 18atm at 20C, will the gas condense Why if so
although even more strained than cyclopro-panone, is nevertheless quite stable and can even be distilled. Explain, taking the polarity of the carbonyl group into account.
the energy carried away by one mole of potassium is 295KJmol^-1. What is the wavelength of a single photon? What is the color of this light emitted
When 1 gram of nitroglycern, C3H5(NO3)3, decomposes to form nitrogen gas, oxygen gas, gaseous carbon dioxide, and liquid water, 1.9 kcal of heat is evolved. How much heat is evolved per mole of gas formed in the decomposition of nitroglycerine?
How many of these nuts would a 67kg person have to eat to obtain enough energy to bike (racing)for 40min?
In acid-base equilibria, the strength of acids and bases are reflected by their Ka's and Kb's, respectively. Explain, using examples while Ksp cannot directly reflect the solubility of the ionic compound.
Iodine-131 is a radioactive isotope. After 4.00 days, 70.8% of a sample of 131I remains. What is the half-life of 131I
streptomycin is an antibiotic produced by soil microbes. if 50.0ml of a solution containing 0.01370g of the
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