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A 15.0-g sample of aluminum (specific heat = 0.902 J g-1 oC-1), initially at 95.0oC, is immersed in a 35.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 44.2oC, in an insulated container. Once equilibrium is reached, what is the final temperature of the metal-water mixture?
Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide
An element crystallizes in a face-centered cubic lattice. The edge of the unit cell is 392 pm, and the density of the crystal is 21.45 g/cm3. Calculate the atomic weight of the element (in g/mol)
Approximately how much water will you need to use to prepare the hot saturated? Upon cooling in an ice-bath and subsequent filtration, how much pure phthalic acid would you expect to recover? show calculations
Show how the following compounds could be synthesized from benzene a. benzoic acid b. aniline c. m-chloroenzenesulfonic acid d. m-chloroethylbenzene e. m-brombenzonitrile f. benzyl methyl ether g
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1: 2NO(g) + O2(g) --> N2O4(g)
The rate constant for this reaction at 25 degrees C is 4.9 x10-6 L/(mol s) while the rate constant at 35 degrees Cis 1.5 x 10-5 L/(mol s). Use this data to calculate the energy of activation for this reation.
Construct a model of 2-chlorobutane. Which carbon in the chain is a chiral center. What has highest priority. Lowest
What was the ?t for the metal c) how much heat flowed into the water d) taking the specific heat of water to be 4.18J/g°C, calculate the specific heat of the metal e) what is the approximate molar mass of the metal
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
Why would a mixture of salts be more difficult to identify than a single salt? For example, copper sulfate, barium nitrate and nickel bromide versus only nickel bromide.
A microwave oven operating at 2.4 GHz has a power output of 650 W. A) What is the wavelength of the mocrowaves?
Calculate delta S0 for the following processes: a.) Heating 1 mol of benzene(liquid) from 298K to 353 K at 1 bar pressure, neglecting any T- dependence of Cp.
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