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Assume an organic compound has a partition coefficient between water and diethyl ether equal to 9.00. If there are initially 5.00 grams of the compound dissolved in 100.0 mL of water, how many grams will remain in the aqueous layer after extraction with one 20.0 mL portion of ether
The pH of a certain solution is 3.0. How many H+(aq) ions are there in 1.0 L of the solution
write the Nernst equation for the reduction of Fe2O3 (s) according to the reaction listed below, write the equation in terms of pH.
Calculate the standard free energy change per mole assocatiated with the formation of solid SrSO4. Use the solubility product. Remember G(standard) equals -RTln(K) when all surface effects are neglected.
total molarity of acid and conjugate base in this buffer. A boy mixes 5.70mL of a 0.330M Hydrochloric acid solution to the beaker. Determine the pH change if The pKa of acetic acid = 4.760.
what is the change in enthropy for this process in kJ/K*mole. The atomic mass of oxygen is 16.00.
If 300kJ of heat are exchanged between the system at -5degrees C and its surroundings at 30degrees C, the entropy of the systems plus
calculate the molar quantity of N2 that must be generated.What molar quantity of sodium azide is required to generate this much nitrogen?
The energy bar contains 100 mg of sodium, which constitutes 4% of the maximum recommended daily intake of sodium.
Carbon tetrachloride, CCl4, is nonpolar. What forces hold the molecules together?
certain temperature and pressure, one liter of CO2 gas weighs 1.85 g. What is the mass of one liter of CH4 gas at the same temperature and pressure?
the world's estimated annual gas reserves in 2006 were 6124 trillion ft3 .The world rate of annual use was 105.5 trillion feet3. How long these reserves will last if the rate of use continues?
Suppose that the microwave radiation has a wavelength of 10.8 . How many photons are required to heat 205 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
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