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Calculate the change in entropy for one mole of a diatomic ideal gas (Cv = 5/2 nR) that is heated and compressed from 25.0°C and 10.0 L volume to 100.0°C and 1.00 L volume.
A 368-g sample of water absorbs infrared radiation at 1.06 x 10^4 nm from carbon dioxide laser. Suppose all the absorbed radiation is converted to heat.
What is the major product in the Claisen condensation of ethyl propanoate in the presence of excess sodium ethoxide (assuming standard acidic work-up)?
Pure water is saturated with a 2:1 mixture of hydrogen and oxygen at a total pressure of 5 atm at 298 K. The water is then boiled to remove all the gasses.
Filling atomic orbitals creates an electronic structure pattern that makes elements with similar configurations (but different principle quantum numbers) have similar chemistry which thus explains t
If you have a set of H-atom wave functions and wish to evaluate what would be the measured value of the electric dipole moment in the n=2, l=1, m=0 state,
Why is the "melting point" of a substance actually a "melting range" and therefore should never be recorded as a single temperature and in theory, does a melting "point" exist?
What is the major product in the claisen condensation of ethyl propanoate in the presence of excess sodium ethoxide (assuming standard acidic work-up)? Give its systematic IUPAC name.
Diffraction studies of crystals depend on interferences between planes of electron density, whose spacing must be greater than the wavelength. Since the shortest bonds are about 0.1 nm, such planes
Aniline (C6H5NH2, Kb = 4.3 x 10^-10) is a weak base used in the manufacture of dyes. Calculate the value of Kn for neautralization of aniline by vitamin C (ascorbic acid, C6H8O6, Ka = 8.0 x 10^-5).
The hydrolysis of acetylcholine is catalyzed by the enzyme acetylcholinesterase, which has a turnover rate of 25,000 s^-1. Calculate how long it takes for the enzyme to cleave one acetylcholine mol
A 1.00 L vessel at 0*C contains 0.21 mol N2, 1.3 mol H2 and 1.0 mol CH4. Calculate the pressure of the gas mixture and the partial pressure of each constituent gas in the mixture.
When a 50 mL aliquot of 0.05182 M EDTA was mixed with an equal volume of the diluted sample, all three ions were chelated, and a 5.11 mL back-titration with 0.06241 M copper (II) was required.
How many grams of aluminum hydroxide are obtained from 14.2 grams of aluminum sulfide? Balanced Equation of Aluminum Sulfide reacting with water to form aluminum hydroxide Al2S3 + 6H20 ---> 2Al(O
A current of 0.50 A passes through a copper (II) sulfate solution for 15 min. How many coulombs and electrons pass through the cell?
A 0.5123g sample (molar mass 204.23g/mol) of KHP was dissolved in about 25 mL of distilled water and titrated to the phenolphthalein end point with 28.75 mL of a sodium hydroxide solution. Calculate
How many times would a mole of timbits placed end to end reach from here to Mars and back. Distance from earth to Mars is 7.8 x 10^7 km. (10 to the power of 7).
Write the reaction for the formation of 1 mole of acetic anhydride from 2 moles of acetic acid. Why is the product described as an "anhydride?"
What volume is mililiters of nitrogen, N2 would have to be collected at 0.978 atm at 28.0 degrees C to have a sample containing 0.015 mol?
What is the actual ground-state electron configuration for copper (cu)? Since Copper is an exception to the usual order of filling.
A spark causes the CS2(g) to ignite, burning it completely. After reaction, temp returns to 100.0 celsius and mixture of product gases is found to have a pressure of 2.40atm. what is the partial pre
Asoluble iodide was dissolved in water .then excess of silver nitrate,was added to precipitate all the iodide gave ions of siver ioded ,if 1.545g of solluble iodide gave 2.185g of silver iodide.
In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat solution of the salt. I calculated that the calorimeter constant for the
A sample natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.20L of the mixture? Assume ideal gas behavior.