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The entropy of hydration becomes additional negative from Na+ to Mg2+ to Al3+ though the coordination number is probably 6 in each case. Account for the trend in disorder. S?298 (J mol-1 K-1): Na + (aq), 60.3; Mg2 + (aq), -138; Al3 + (aq), -322.
A L flask is filled with 1.35 g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.45 atm.
The solubility of a slaked lime, Ca(OH)2, in water is .185g/100mL. What volume of .00400 M HCl is needed to neutralize 10.0mL of a saturated Ca(OH)2 solution
Calculate the solubility-product constant for Zn3(AsO4)2. Ksp = (c) The Ksp of Ag2CO3 at 25 oC is 8.46e-12. What is the molar solubility of Ag2CO3? solubility = mol/L
A sealed container holding 0.0255 L of an ideal gas at 0.991 atm as well as 69 °C is placed into a refrigerator also cooled to 41 °C with no change in volume. Compute the final pressure of the gas.
Point out the position(s) in glucose from isolated glycogen in which you would expect to find significantly c14-labeled carbon atoms. Presume that there are no complicating reactions which rearrange the label in pyruvate before its entry into the ..
What is the number average degree of polymerization at the theoretical gel point which is predicted by the theory? (10 points) Hint: Use the regular definition of the number average degree of polymerization, ; x n (x n )t = Total # of structural u..
Calculate the intermolecular collision frequency and the mean free path in a sample of helium gas with a volume of 5.0 L at 27 degrees Celsius and 3.0 atm.
What happens to these physical properties as the strength of intermolecular forces (London dispersion forces, Dipole-dipole forces, Ion-dipole forces, Hydrogen-bond forces) increases
what is the freezing point of an aqueous solution that has 25.0 g of glucose, C6H12O6 per 100.0g H2O (Kf=186C/M)
In which of these molecules or ions does the presence of nonbonding electron pairs produce an effect on molecular shape, assuming they are all in the gaseous state. Check all that apply. SiH4, PF3, HBr, HCN, SO4
Can anyone help me with bromination and why it is more selective than chlorination. We have to use endo and exothermic graphs to explain
There are approximately 2.60x10^13 red blood cells with atotal of 2.90g of iron. On the average, how many iron atoms are present in each red blood cell. (molar mass (Fe)= 55.85g
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