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A coordination complex is found by study to contain 21.79Co,18.90 NH3, and 39.32 Cl. Presume the remainder, if any, is water. Explain what is the empirical formula for this coordination complex.
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/T (in K) is linear and has a slope of -7445 K. Calculate the activation energy for the reaction
what is the theoretical yield in grams of silver if 8.75 g copper are mixed with 0.350 mol agno3aq? the balanced
A certain lead-sulfur compound contains 86.59% Pb by mass and the remainder is sulfur. What is the empirical formula of the compound
A closed container is filled with oxygen. The pressure in the container is 375kPa . What is the pressure in millimeters of mercury
Use a table of Ka or Kb values to determine whether Kc for the following reaction is less than, equal to or greater than 1 CH3CO2- + HSO4- CH3CO2H + SO42-
The standard enthalpy of reaction, DH°rxn for C2H2(g) + 2 H2(g) ® C2H6(g) is -311.5 kJ mol-1. Determine the value of DE°rxn for this reaction
a 10.0 g piece of metal at 100 degrees celcius is transferred to a calorimeter containing 50.0 ml of water intially at
A sample of 5.20ml of diethylether (C2H5OC2H5; density=0.7134g/ml) is introduces into a 6.40L vessel that already contains a mixture of N2 and O2 whose partial pressures are PN2=0.751atm and PO2=0.209atm
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2+, and the concentration of Ag+(aq) is ..
If 2.31 grams of the vapor of a volatile liquid is able to fill a 498 mL flask at 100 degrees Celsius and 775 mmHg, what is the molecular weight of the liquid. What is the density of the vapor under these conditions
Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H+ and Fe^3+ in the balanced reaction? Fe^2+(aq) + MnO4-(aq) yields Fe^3+(aq) + Mn^2+(aq)
if the molarity of the HCl solution was actually greater then the lable indicated would it affect the calculated value for the number of moles of HCl that reacted.
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