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The molar heat capacity at constant magnetic field of a paramagnetic solid at low temperatures varies with the temperature and field according to the relation
CH = ((B + CH2)/T2) + DT2,
Where B, C, and D are constants. What is the entropy change of n moles of material when the temperature changes from Ti to Tf while H remains constant at the value H0?
For the reaction [NH3] + [H3O+] draw the conjugate acid and base products of each reaction. Also determine whether the acid-base equilibrium would lie on the left or the right.
How does the energy of two photons corresponding to a wavelength of 451 nm (blue light) compare with the energy of three photons corresponding to a wavelength of 704 nm (red light)?
The equilibrium constant for the reaction, 2HI = H2 + I2 is 0.49. Calculate the number of moles of hydrogen produced when one mole of HI
Explain why dichloroethene has a boiling point of 60 degrees C while trans-dichloroethene as a boiling point of 48 degrees C. Include drawings of the structures with dipoles in your answer.
A buffer was prepared by mixing a solution that is 0.285 M in HA and 0.385 in A-. The pH of this buffer was 4.435. Then to 405mL of this buffer solution was added to 21.5mL of 2.0 M HCL. Explain what is the pH of this new solution
you take 3.1789 g of a substance and place it into 100.0 g of benzene. the boiling point of this solution is found to
Problem- To what volume should you dilute 129mL of an 8.15M CuCl2 solution so that 52.0mL of the diluted solution contains 4.48g CuCl2? Express your answer in milliliters.
An unknown gas effuses through a porous barrier at a rate that is 0.752 times the rate of Ar (g) under the same conditions
A researcher studying the nutritional value of a new candy places a 4.90-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.54 °C
Wine is made by adding yeast to grape juice. What concentration of glucose in grams per liter must the grape juice contain to produce wine that is 11% ethanol by volume? (take the density of ethanol to be 0.789 g/mL^-1) C6H12O6(aq)----> 2CH3CH2OH(..
How Well Do You Protect Your Safety - Are You an Environmentalist?
Question- Calculate the pH and the pOH of an aqueous solution that is 0.025 M in HCl (aq) and 0.080 M in HBr (aq) at 25 degrees C
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