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Why are functional groups called "functional"? How does the electronegativity of the atoms play a role in group's functioning as compared to carbon skeleton of the molecule?
The to * transitions of purine and pyrimidine bases in DNA results in absorbance of light at 260 nm. If the extinction coefficient for a PCR primer of DNA is 1.00 x 104 M-1 cm-1
For the reaction: N2(g) + 2 O2(g) ? 2 NO2(g), Kc = 8.3 × 10-10 at 25°C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is twice the concentration of O2 gas.
Problem- Two students performing the general unknown lab were told that their unknown would contain 4 cations. They first tested for the silver and aluminum, but found that another ion was present.
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution.
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
How can you find the pI of an amino acid when there are four ionizable groups on the same molecule?
Find the concentration of the NO at equilibrium. b) Explain why a large equilibrium concentration for NO is not expected.
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
Ultrahigh vacuum is considered to be around 10-11 Torr. What is the mean free path of a molecule in such a vacuum?
how many of the alcohol and ethers stereoisomers of formula C5H12O have charity centers.
A piece of Al(s) at 94°C is placed in 65g of H2O at 28°C. The Aluminum cools and after equilibrium the final temperature of Aluminum and water is 38°C. What was the mass of the aluminum?
A half-cell, made by dipping a silver wire into 0.05 M aqueous AgNO, at 298 OK, develops a half-cell potential of +0.740 volts. What is the standard half-cell (Eo) for silver?
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