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If a pure R isomer has a specific rotation of -139 degrees, and a sample contains 85% of the R isomer and 15% of its enantiomer, what is the observed specific rotation of the mixture?
A vapor composed of 0.75 mole fraction ethanol and 0.25 mole fraction acetic acid at 120.0 mm Hg (absolute), is in equilibrium with a liquid phase also composed of ethanol and acetic acid.
at 25.0degc a sample of xe gas occupies 545 ml in a piston-cylider apparatus when the external pressure is 751 torr. at
What is the bubble-point temperature of the solution. What are the mole fractions of ethanol (e) and water (w) in the vapor phase at the bubble-point temperature
1.925 g of methanol is burned in a bond calorimeter with a heat capacity of 10.4 kj/c .how much heat is given off in kj/g if the temperature increase 4.19 c
Define fission and fusion. Describe both processes including the nuclear reactions for both prcesses.
Which of the following pairs of molecules is listed in order of decreasing net dipole moment (from more polar molecule to less polar molecule)
What is the minimum external voltage one must supply in order to perform the electrolysis of molten CaCl2. Show work, explain, and suggest a means for supplying this energy.
a mixture of 7.50 g he and 29.5 g ne has a pressure of 750. mm hg. what is the partial pressure of each of the
Explain which you would choose as a starting material to prepare an alkene with the maximum yield.
The gas-phase dipole moment of the hydroxyl radical, •OH, is 1.66 D, and the bond length for this species is 97.1 pm. Use this information to calculate the percent ionic character of the O-H bond.
A reaction where A +B ? C +D has a ? Go' of 5 kcal/mole and the concentrations are for A through D, respectively 10 mM, 5 mM, 2 mM and 3 mM. Find the ?G' and state if favorable or not.
If replacing magnesium with an equal weight of sodium, how would the enthalpy of the reaction changed?
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