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What is the freezing point of a solution that contains 12.0 g of glucose (C6H12O6) in 50.0 g of water (Kf = 1.86°C/m)
a. -2.48 °Cb.-2.00 °Cc.-0.682 °Cd.-0.124 °C
A sample of hydrogen gas was collected over water at 36°C and 855 mm Hg. The volume of the container was 6.50 L. Calculate the mass of H2(g) collected. (Vapor pressure of water = 44.6 torr at 36°C)
It has been observed that malonyl-CoA inhibits palmitic acid oxidation in isolated mitochondria, but that it has little or no effect on the oxidation of octanoic acid
Find the equilibrium partial vapor pressures at 20°C solution of 100 g of benzene plus 100 g of toluene. Find the mole fractions in the vapor phase that is in equalibrium with the above solution.
it was determined in a calorimetry experiment that a piece of copper metal of 92.0 gram released 1860 joules of heat to
A reaction taking place under standard conditions is sponteneous at 1000 K but is nonsponteneous at 300 k. What are the signs of delta Hrxn and delta S rxn
three gases nitrogen helium and krypton are confined in a 4.00 l vessel at a pressure of 14.0 atm. the vessel contains
Calculate the solubility of calcium oxalate in plain water and the concentrations of calcium and oxalate ions in a 0.010 M Ca(NO3)2 solution
What are the consequences of removing some of the phase transfer catalyst along with the hot reaction mixture after refluxing
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
complete and balance the equations for each of the following reactions: a)KHCO3(s)+HBr(aq)> b)Ca(s)+H2SO4(aq)> c)H2SO4(aq)+Ca(OH)2(s)> d)Na2CO3(s)+H2SO4(aq)>
The heat of fusion of water is 335 J/g. How much heat would be required to melt 47.5 g of ice?
List and describe briefly the 2 methods which are used by drug companies to discover lead compounds
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