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Is it thermodynamically possible to transform solid SnO2 into liquid SnCl4 by reaction of the oxide with gaseous HCl? Explain what is the equilibrium constant for the reaction at 25C?
For some iron-carbon alloy, the mass fractions of total ferrite and total cementite are 0.55 and 0.46 respectively. (a) On the base of carbon content would this alloy be classified as a steel or a cast iron? Why? (b) If the alloy is a steel, is it..
To determine the concentration of a 25.0 mL ammonia solution (Kb for NH3 is 1.8 x 10-5), 25.0 mL of 0.200 M HCl solution is used. Calculate the pH of the endpoint.
Assume that patient blood lead levels are 0.600 mg/L that total blood volume is 5.0 L and that 1 mol of succimer binds 1 mol of lead.
how much energy in kilojoules is released when 33.0 rm g of ethanol vapor at 95.0circ rm c is cooled to -19.5circ rm c?
What mass of AgBr would precipitate from this mixture? [Hint: Ksp of AgBr = 5.4*10^-13 and Kf of Ag(CN)2 is 1.0*10^21]
Isobutane is the fuel used in disposable lighters. The lighters' operation is dependent upon the butane's ability to vaporize and be ignited, and this depends somewhat upon the large pressure difference between the inside of the lighter and the at..
The freezing point of pure benzene is 5.50 °C and the freezing point depression constant of benzene, Kfp, is -5.12 °C/m.
Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical information: 2 C(s) + H2(g) C2H2(g) H = +226.8 kJ 2 C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l) H = -2599.3 kJ 2 H2O(l) 2 H2(g) + O2(g) H = +..
Compute the radiation dosage (in grays) for an 81 kg person that is exposed for 6.0 seconds to a 3.0 Ci source of beta radiation. Presume that 100% of the radiation is absorbed and each beta particle has an energy of 1.1*10^-13J.
what number of grams of NaHCO3 in a .210 g piece of antacid would generate 38.0 moles of CO2, if the CO2 is measured at 20 degrees C and 1.00 atm.
What is the hydronium-ion concentration of a 0.40 M solution of HCN (Ka= 4.9×10-10) at 25° C?
Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 26.0 mL of 0.0300 M acetic acid. 2) Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 36.0 mL of 0.0400 M H2SO4 (forming Na2SO4 and water)
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