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Calculate the pH of 0.050 M Fe(NO3)3 solution. The hydrated Fe3+ ion is [Fe(OH2)6]3+. For [Fe(OH2)6]3+, Ka = 4.0 × 10-3
if 76g of Cr2O3 and 27 g of al completely react to form 51 g of Al2O3 how many grams of Cr are formed?
A reaction mixture initially containing 0.520 M H2S and 0.520 M SO2 was found to contain 1.0 x 10 -3. A second reaction mixture at the same temperature initially contains 0.245 and 0.335. calculate the equilibrium concentration of H2O in the secon..
Benzoic acid was made in a reaction along with product and benzoic acid needs to be removed using extraction. How can this be done. The solvent is CH2Cl2
The thallium (present as Tl2SO4) in a 6.05-g pesticide sample was precipitated as thallium(I)iodide. Calculate the mass percent of Tl2SO4 in the sample if 0.235g of TlI was recovered.
Find the mass of urea (CH4N2O) needed to prepare a 50.2g of a solution in water in which the mole fraction is 7.51*10^-2.
A 4.37 gram sample of a certain diatomic gas occupies a volume of 3.00 L at 1.00 atm and 45°C. What is the gas
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
A certain reaction has an activation energy of 60.0 kj/mol and a frequency factor of A= 3.10×1012 M^-1s^-1 . What is the rate constant k , of this reaction at 30.0 Deg celsius?
Nickel nitrate and potassium carbonate react to form nickel carbonate and potassium nitrate. How many milliliters of 0.55M Ni(NO3)¬2 are needed to react with 85 mL of 0.25M K2CO3?
What is the pH of a solution which results from mixing 150 mL of 0.50M acetic acid and 150 mL of 0.50M sodium hydroxide at 25oC?
Calculate the corresponding entropy for each state. d) Calculate the temperature for each state.
How many grams of CaH2 are needed to generate 19.0 L of H2 gas if the pressure of H2 is 780. torr at 15 C?
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