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Determine the change in entropy for one mol of liquid water initially at 298 K when the temperature is elevated by 1.0 K, given Cp,m = 75.3 J/(mol K). Determine the answer in Joule per Kilogram
At 1 bar and 298 K the molar volume of liquid water is 18 cm^3/mol. When the pressure is increased by the 1 bar, analyze the change in molar Gibbs free energy.
By using the Henry's Law, determine the solubility of CO2 in the ocean at the 25 degrees C. The mole fraction of CO2 in the atmosphere has risen from .000314in 1962 to .000360 in 2005.
Determine the approx volume of silver nitrate solutions that will be required for the precipitation. Assume a sample mass of 0.1g, and that your unknown chloride salt contains the approx 55% c
Determine the composition of a brass alloy if 12.15 g of th ealloy reacts with HCl(aq) to yield 2.305g ofZnCl2? When the brass is an alloy of Zn and Cu. Cu does not react with HCl(aq), but does react
Determine the energy difference between the most stable conformation of cis-1,2-dimethylcyclohexane and the least stable chair conformation of trans-1,3-dimethylcyclohexane by using a value of 3.6
Determine the number of moles of CCl4 formed, assuming the reaction went to completion when1.0 mol of carbon reacted with 1.00 mol of chlorine: C + 2Cl2 ® CCl4
Consider another state of electron that has energy twenty five times the zero-point energy. Calculate the degeneracy of this energy level?
Calculate the concentration of the KOH solution when a quantity of 10.28 mL of a KOH solution is required to neutralize 0.4847 g of KHP.
Explain why the water molecule is bound when some water molecules bound to a protein can be observed by X-ray crystallography in terms of DH and DS.
A student makes 500.0 ml of Ca(NO3) 2 solution by dissolving 49.36 grams of Ca(NO3)2 in distilled water by using a volumetric flask. The student then pipets 10.00 ml of the Ca(NO3)2 solution made in
At 4 degrees Celsius a pitcher containing 0.75ml of water is removed from the refrigerator. Determine the numbers of kilojoules are required to warm the water to a room temperature of 27 degrees Ce
Calculate the factors by which the concentrations of the following species have to be multiplied to convert them to concentrations in mg/L as CaCO3: CaO, HCl, Na2CO3, Na, Ca(HCO3)2.
Recognize the following salts as likely to be basic (B), acidic (A) or neutral (N) salts with respect to changing the pH of the solution when dissolved in DI water.
0.0350 of potassium sulphate is transferred and weighted to 250 ml volumetric flask , which is then diluted to the mark with distilled water, assume density is 1.000g/ml, the potassium sulphate puri
Calculate the concentration of the solute within the solution in mole percent if at 25 degrees centigrade the vapor above an aqueous solution contains the 19.5 mg water per liter.
Write down an equation for the reaction and, assuming that all the Mg was converted to the magnesium oxide, determine the mass of the magnesium originally present in crucible?
Determine the numbers of grams of water can be heated from 25.0 degrees Celsius to 35.0 degrees Celsius by the heat released from 85.0g of iron that cools from 85.0 degrees Celsius to 30.0 degrees
In procedure B, what will be the effect on the measured percent water in the unknown if the empty crucible is not heated long enough to totally dry it prior to weighing?
Calculate the "Lanthanide contraction" and which other elements does it effect? Determine the formal charge on each atom N2O?
Cylcopropane (C3H6) re-arranges to propane(CH3-CH-CH2) at 500 degrees C. The reaction is a first order, and the rate constant is 6.7*10^-4s^-1.
Explain how much heat is released per mole of ethanol combusted for the equation C2H5OH (l) + 3O2 (g)--> 2CO2 (g) + 3H2O (g), ΔUrφ = -1373 kJ at 298 K.