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Explain what is the wavelength of light that is emitted when an excited electron in the hydrogen atom falls from n = 5 to n = 2? 5.12 x 10-7 m4.34 x 10-7 m6.50 x 10-7 m5.82 x 10-7 m None of these
What is the minimum pH required to prevent the precipitation of SnS in a solution that is 0.0010 M Sn(NO3)2 and saturated with H2S (0.10 M)? (ksp = 1.0 x 10 ^-25 K1K2 = 1.3 x 10 ^-20)
Explain the naming laws to name elements. and also how to derive the chemical formula from the names given.
We will abbreviate malonic acid, CH2(CO2H) 2 as H2M. Find the pH and concentrations of H2M, HM-, and M2- for the following. (Ka values for malonic acid are Ka1 = 1.42 10-3 and Ka2 = 2.01 10-6.)
What is the name of each of the three quantum numbers used to describe orbital's in atoms. What orbital characteristics does each quantum number describe. What are the limitations on the values of these numbers
Consider the possible reaction when stoichiometric amounts of solutions of Ba(OH)2(aq) and Al2(SO4)3(aq) are mixed. The products of the reaction are
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 20.0 L
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1370 Torr
Determine the calorimeter constant of the calorimeter in which the combustion of 0.995 g of sucrose raises the temperature by 4.21 degrees celsius
Ethanol normally boils at 78.4C. the boiling point elevation constant for ethanol is 1.22C/m. what is the boiling point of a 1.0 m solution
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
application of ideal gas law.a certain amount of gas at 25 degrees c and at a pressure of 0.800 atm is contained in a
Explain how you would prepare this buffer solution. Be specific about the volumes of the solutions you would use.
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