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a)Calculate the final temperature for Cv,m=3R/2.b)Calculate q for Cv,m=3R/2 .c)Calculate w for Cv,m=3R/2 d)Calculate delta H for Cv,m=3R/2 e)Calculate delta U for Cv,m=3R/2
If 61.9 g of sugar (glucose) is fermented, what is the maximum volume of pure ethanol that could be produced? (density = 0.789 g/mL)
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solutio
Calculate the pH at the equivalence point for the following titration: 0.10 M HCN versus 0.10 M NaOH. The Kb of CN- = 2.0 x 10-5.
A saturated aqueous solution of lead(II) iodate, Pb(IO3)2, contains 3.1 x 10-5 M Pb+2 at 25°C. Assuming an ideal solution, and assuming no reaction of the ions with water, calculate the Ksp of l
Consider the following data and select the best buffer system below to make a buffer with a pH of 10.00.
Consider the pH range for the following indicators and select the most appropriate indicator for the titration of an HCN solution with a NaOH titrant.
What mass of solid potassium nitrite would need to be dissolved in 500. mL of 0.40 M HNO2 to make 500. mL of a NO2?/HNO2 buffer solution that has a pH = 3.25? Ka of HNO2 = 7.1 x 10?4
(a) What is the product. (b) Provide a mechanism showing the formation of the product at a. (c) Suggest a more feasible synthesis condition for the conversion.
(a) Write the reaction equation, (b) indicate which product is predominant at low temperature, (c) which product is predominant at high temperature, and (d) draw a reaction energy diagram explaining
(1) Explain different pKa value of the following two compounds. When compound A is treated with a strong base, followed by CH3Br, a pair of structural isomers is produced. (2) Write a reaction equat
When the following epoxide was treated with aqueous acid or base respectively, a pair of isomers were produced. Complete the following reactions explain the formation of each product with a mechanis
Low-melting solids often "oil out" of a recrystallization solution rather than crystallizing. If this were to happen, how would you change the recrystallization procedure to ensure good crystals
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.61 nm. It then gives off a photon having a wavelength of 950 nm. What is the final state of the hydrogen atom
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level n = 7 to the level n = 2.
Calculate the Pickering series wavelength associated with the excited state ni = 8. B)What region of the electromagnetic spectrum does this transition fall in? gamma ,x-ray ,visible ,radio ,microwav
Hydrogen atoms are excited by a laser to the n = 4 state and then allowed to emit. What is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observe
The calibration points for the Martian temperature scale are the usual melting point of ice and boiling point of water, which are assigned the values 0 °M and 80 °M. the normal body temperat
Determine the dissociation constants for the following acids. Express the answers in proper scientific notation where appropriate
If insulin were treated with mercaptoethanol to break its disulfide bonds, and then the mercaptoethanol were removed so that disulfide bonds could re-form, how many different wyas could the two poly
Ionization energy is the energy needed to eject an electron from an atom. Compute the ionization energy of a hydrogen atom in its third excited state (n = 4).
A solution contains 8.88g of KBr in 500.0mL of solution and has an osmotic pressure of 6.97atm at 25 C. Calculate the van't Hoff factor (i) for KBr at this concentration.
Calculate the vapor pressure at 25 degree C of hexane above the solution. The vapor pressure of pure hexane at 25 degree C is 151 torr
The average bond enthalpy for a double bond is 614 and that of a single bond is 348 . Estimate the energy needed to break only the bond of the double bond of 2-butene. Express your answer numericall