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According to Debye's law, the molar heat capacity at constant volume of a diamond varies with the temperature as follows:
cv=3R (4Π4/5) (T/?)3.
What is the entropy change in units of R of a diamond of 1.2 g mass when it is heated at constant volume from 10 to 350 K? The molar mass of diamond is 12 g, and Θ is 2230K.
Gaseous hydrogen iodide is placed in a closed container at 425 , where it partially decomposes to hydrogen and iodine: 2HI(g) is at equilibrium H2(g)+I2(g). At equilibrium it is found that HI is 3.52×10-3 ,H2 is 4.78×10-4 , and I2 4.78×10-4.
A compound forms cis-1,2-dimethylcyclopropane when it is reduced with H2 and Pd/C. The H NMR spectrum of the compound shows only two singlets. What is the structure of the compound
The strongest line in the visible region of the neon spectrum has a wavelength of 640.2 nm. What color does the light appear. What is the energy of a photon associated with this line.
how could you use IR spectroscopy to identify which alkene is in which vial? How do you determine what the wavenumber values are for specific compounds/ elements?
Find the molar mass of the compound and determine its molecular formula. What is the Lewis formula of the compund? predict the electonic and molecular geometry using the VSEPR model.
Organic Chemistry and Genetics Problems - Write an equation for the complete hydrolysis of 2'-deoxythymidine-5'-monophosphate (dTMP) to its component parts.
How many milliliters of 1.00 M KOH should be added to 100mL of solution containing 10.0 g of histidine hydrochloride (FM 191.62) to get a pH of 9.30
Calculate the pH at the equivalence point in the titration of 56 mL of 0.10 M methylamine (see Table 15.4) with a 0.20 M HCl solution.
Problem- Calculate the masses of oxygen and nitrogen (in mg) that are dissolved in 1.5 L of aqueous solution in equilibrium with air at 25°C and 760 Torr. Assume that air is 21% oxygen and 78% nitrogen by volume.
What flow rate of air must be entering the hood so that the hydrogen gas does not pose a flammability hazard
Calculate the pre-equilibrium concentration of Fe3+(aq) in a solution made by mixing 2.8 mL of 2.010?3 M Fe(NO3)3 and 7.2 mL of 2.010?3 M NaSCN. Assume the final volume is 10.0 mL.
Assume the eccentric professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at -15.0°C overnight and then want it heated to 95°C when she gets there in the morning.
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