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Problem- SiCl4 is exposed to radiation (photons) with a wavelength of 3 x 10-7m. Determine if the compound is stable under these conditions or not. Solve this problem by making use of Pauling's treatment of polar covalency; additional data given:Bond energy: Si-Si = 350 kJ/mol; Cl-Cl = 239 kJ/mol
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A 2.446 g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 minutes. After cooling
what is the molar mass of glucose if 22.5g gives a freezing point of -0.930 C when dissolved in 250 g of water?
Calculate the hydronium ion concentration and the pH after the addition of .25mL of .10 M HCl to each one. What accounts for the difference in hydronium ion concentrations? Explain this based on equilibrium concepts.
Ionization-type smoke detectors use the emissions from americium-241 to create a small electrical current in the detector, which sends out an alarm when smoke that enters the detector causes the current to decrease.
What is the molar solubility of lead(II) chloride in a solution that also contains 0.15 M Cl- ions at 25 °C? The Ksp of PbCl2 is 1.6 × 10-5.
Draw a fully labeled M.O. diagram for carbon monoxide. Be sure to show the atomic orbitals that come together to form the molecular orbitals, and give the orbital type designations. You may disregard core electrons (1s electrons from the atoms).
At what point is a buffer solution no longer effective in resisting a pH change when a strong acid is added
The acid-dissociation constant for hypochlorous acid (HClO) is 3.0x10^-8 A)Calculate the concentration of H30+at equilibrium if the initial concentration of HClO is 9.0×10-3
Bromine reacts with aluminum iodide. If 6.35x10^21 molecules of iodide are produced , how many grams of aluminum iodide is reacted. need help writing out the equation.
Suppose that the microwave radiation has a wavelength of 12.4cm . How many photons are required to heat 295mL of coffee from 25.0 C to 62.0 C ? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J(gxK) , as..
pKa of a carboxylic acid group found on a molecule of DOM is 4.2 and pKa of An amino group found on a molecule of DOM is 9.3. Explain how pH influences the ability of these groups to bind to metals. Illustrate how well each of these groups would b..
You can purchase hydrochloric acid (HCl) in a concentrated form that is 37.0% by mass and has a density of 1.20 g/mL. What is the molarity of hydrochloric acid in this concentrated solution
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