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What is the hydronium-ion concentration of a 4.07 10-4 M solution of p-bromobenzoic acid, BrC6H4COOH, for which Ka = 1.00 10-4
calculate the temperature (in EC) at which the vapor pressure is 760 torr. The vapor pressure of Ethanol is 115 torr at 34.9EC
Bulb A with volume of 500 mL initially contains N2 at 0.7 atm pressure and 25?C. Bulb B, with volume of 800 mL initially contains O2 at 0.5 atm pressure and 0?
Draw the structure of aspiring and assign each different type of proton(s) a letter. Then assign the letters to their corresponding peak in the NMR spectrum
make a reversible isobaric expansion to state B: (V=44.8L). make a reversible isochoric expansion to C: (p=0.5atm), and finally makes a reversible isothermal compression back to A.
The population mean of the bulb lifetime is 950 h and the population standard deviation is 50 h. calculate the fraction of bulbs expected to have a lifetime less
In the DNA double helix, adenine forms three hydrogen bonds with thymine D) In the DNA double helix, cytosine forms three hydrogen bonds with guanine
At a given temperature, the equilibrium constant K for the reaction 2SO2(g) + O2(g) 2SO3(g) is 3.0 × 109. If 2.80 mol of SO2 and 4.06 mol of O2 are placed in a 1.78-L container.
Why are polychlorinated biphenyls (PCB's) importance to an EH&S or FS professional who encounters them when come to an incident where they are present?
what purpose does the addition of bromine serve in the procedure described for the isomerization of dimethyl maleate
Enzymatic oxidation of naphthalene by bacteria proceeds of intermediate cis-diol. which prochiral face of naphthalene is hydroxylated in this process?
The optical rotation of a sample composed only (S)-1-amino-1-phenylethane is determined. [a]obs = -157.0 degrees. If the cell path length was 1.0 dm and the concentration of (S)-1-amino-1-phenylethan in the sample was 5.2 g/mL
A 62g piece of ice at 0 degree celsius is added to a sample of water at 9 degree celsius. All of the ice melts and the temperature of the water decreases to 0degree celsius. How many grams of water were in the sample ?
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