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Which of the following would be a reasonable unit for the rate constant of a first order reaction?
1. mol/L.sec
2. mol2/sec.L2
3. 1/sec
4. L/mol.sec
5. L2/mol2.sec
Calculate the pH at 25 degree C of .25 aqueous solution of phosphoric acid (H3PO4). (Ka1,Ka2, and Ka3 for H3PO4 are 7.5x10^-3, 6.25x10^-8 and 4.8X10^-13
What will happen to the pressure if 1 mole of N2 gas is added to the container while keeping the temperature and size of the container the same
An unknown liquid with a boiling point of 58 C at 670 mmHg is soluble in water, cyclohexane and alcohol, what's the liquid.
Selenious Acid, H2Se)3, is primarily used to chemically darken copper, brass, and bronze. It is a diprotic acid with the following Ka values: Ka1 =2.7x10-3 and Ka2= 5.0x10-8.what is the pH of a 2.89 M solution of selenious acid?Estimate [HSe)3-] a..
Calculate the ratio of the potential energies for the interaction of a water molecule with an Al3+ ion (of radius 53 pm) and with a Be2+ ion (of radius 27 pm).
As a technician in a large pharmaceutical research firm, you need to produce 200. of 1.00 potassium phosphate solution of = 7.26. The of is 7.21. You have 2.00 of 1.00 solution and 1.50 of 1.00 solution, as well as a carboy of pure distilled . How..
Why is it important to the place the thermometer bulb at in the lower part of the Hickman still head. What will happen if you place it either a)too low or b)too high in the condenser
What is the osmotic pressure, in atm, of a solution formed by dissolving 17.8 g of PbCl4 in 0.250 L of water at 64.4 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
explain the structural feature of acetanilide molecule.1. acetanilide is moderately soluble in hot water but much less
Calculate the synthesis of one mole of H2S from H2 and S2 gases. the decomposeosition of one mole of H2S gas
In an adiabatic compression if one mole of an ideal gas with a Cv=5R/2, the temperature rises from 293 K to 325 K. Calculate the heat, work, change in enthalpy and change in internal energy
what are the special characters of hollow tube, herring bone and bambo like carbon nano tubes in chemistry?
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