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What effect would an error in cell dimensions (say 10.50 mm instead of 10.00mm) have on the value of E?
For propane, C3H8, the standard enthalpy of combustion of the gas is -2220 kJ/mol and the standard enthalpy of vaporization of the liquid is +15 kJ/mol. Calculate the standard enthalpy of combustion of the liquid.
Based on the Hume-Rothery Rules, speculate on the possible driving forces behind the tendency for ordering in this system.
A mixture is made by mixing 40.7 mL 0.000200 M HCl with 38.3 mL of 0.000180 M NaOH. Based upon these values, the mixture's pH will be
With the pure solvent in the light path, the meter reading is 78; with a 0.1 M solution of a solute in the same solvent, the meter reading is 55. The light path is 0.5 cm. Calculate the absorbance, the transmittance, and the molar absorption coeff..
When a clear aqueous solution of calcium chloride (CaCl2) is mixed with a clear aqueous solution of sodium carbonate (Na2CO3), a white solid precipitate forms.
Calculate the number of moles of HCl in the solution dispensed and its associated error.
determine the pressure in a 125-L tank containing 56.2 kg of oxygen gas at 21.0 oC
Write the molecular formula for the compound that exhibits a molecular ion at M+ = 96.0580. Assume that C, H, N, and O might be present, and use the exact masses from your text.
The midpoints of the three pH jumps occurred at 15.35 mL, 19,77 mL, and 22.05 mL of added base. What was the concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in the original solution
How many grams of benzoic acid (C6H5COOH) are contained in a 100.0 mL solution at 0.39 M concentration?
Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other.
The rate constant for a first-order reaction is 5.50 x 10-4 s-1 at 39oC and 2.32 x 10-3 s-1 at 56oC. What is the activation energy
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