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"The cobalt(II) ion, Co^(2+), is especially responsive to magnetic fields, more so that Co^(1+) and Co^(3+). Why?" Given: *Co^(2+) = 1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s2 *Co = 1s2, 2s2, 2p6, 3s2, 3p6, 3d7, 4s2
What is the dissociation constant, Kd, of a ligand with a percent occupancy (or fractional saturation) of 50% when [ligand] = 10-7 M? HINT; Theta = (ligand) / ((ligand) + Kd) where
How many grams of urea [(NH2)2CO] must be added to 585 g of water to give a solution with vapor pressure 2.63mmHg less than that of pure water at 30 degrees Celsius
If 24g Mg is used and the percentage yield is 95%, how many grams of magnesium hydroxide should be recovered?
Silver phosphate, Ag3PO4 has a certain molar solubility in otherwise pure water, but that the molar solubility increases if the solution is made acidic. However, AgCl is NOT more soluble in acid, than it is in neutral solution. How does this happe..
What must be the initial temperature of 22g of steam that is mixed with 90g of water at 68 degree celcius in an adiabatic calorimeter with a heat capacity of zero and that produces
.At 25°C and 1.0 atm, 0.25 g of a gas dissolves in 1.00 L of water. What mass of the gas dissolves in 1.00 L of water at 25°C and 3.0 atm?
A solution is prepared by mixing 66.7 g H2O with 33.3 g HOCH2CH2OH (ethylene glycol). What is the concentration of ethylene glycol in units of molality? The molar masses of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol, respectively
What is the BOD concentration just downstream of the discharge point? (b) If the stream has a cross-sectional area of 10 m2, "what is the BOD concentration 50 km downstream? (BOD is removed with a first-order decay rate con- stant equal to 0.20/da..
Separate the following four compounds using extraction and isolate them in their neutral (as shown) form. Follow the flow chart in Padias (but draw the compounds instead of using the generic "HA," "B," or "N" notation).
There are two carboxylic acid functions in 3-nitrophthalic acid. The pKa of the acid function is at the 2-position is approximately 2, whereas that at the 1- position is about 3. Which of the two is the more acidic and why
An important industrial for synthesizing the ammonia used in agricultural fertilizers involves the combination of N2 and H2 N2 (g) + 3H2 (g) 2NH3 (g) (Kc =4.29 *10^8 at 52 degrees C)
Why are the standard reagents used in neutralization titrations generally strong acids and bases rather than weak acids and bases?
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