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An ideal gas is compressed isothermically by a force of 85 newtons acting through .24 meter. Calculate values of delta U and q.
Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 M NaOH. (For CH3COOH, Ka= 1.8 × 10^-5)
A student substitutes his unknown for the NaBrO3. The dichloroethene layer turns dark orange. Which ions could be ruled out and what test should be performed next?
What is the mole fraction of solute and the molal concentration for an aqueous solution
Calculating Value of Kb in Substances and pKb for Base, Codeine (C18H15NO3) is a weak organic base. A 5.0x10-3 solution of codeine has a pH of 9.95.
Determine the pH of each of the following solutions Part A. 8.3x10^-3 M phenol
If an unknown forms a silver mirror in the Tollens test, forms a purple color in the Schiff test, produces no precipitate in the iodoform test, has a refractvie index of 1.5250, and forms a semicarbazone melting at 124-126 C
The following data were recorded in the analysis of erythropoietin in a plasma sample, as mg/dL. Which of the results, if any, could be statistically rejected with 95% confidence?
Draw the amine from the following: A Hofmann degradation of a primary amine forms an alkene that gives butanal
Draw a mechanism for conversion of acetaminophen into phenacetin in the presence of K2CO3 and CH3CH2I.
It takes 27.22 mL of NaOH to reach the endpoint. What is the equivalent weight of the acid?
Gold has a face-centered cubic structure and has a density of 19.3 g/cm3. What is its atomic radius?
When burned in oxygen, 10.0 g of phosphorus generated enough heat to raise the temperature of 2950 g of water from 18.0oC to 38.0oC. The heat of formation of P4O10 from P4(s) and O2(g) is:
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