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A solution is prepared by dissolving 3.78 g of an unknown nonelectrolyte in 19.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -5.2 oC?
At 25 degrees C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.1 kJ per gram of carbon monoxide consumed. What is the value of ^H for the balanced reaction?
as the sample coolsmoisture from the atmosphere condense on the outside oftheevaporating dish before the mass is
In the experiment a less amount of sulfuryl chloride was used than it is theoretically required for converting all the starting 1-chlorobutane to the dichlorinated products. Why
N part 1 the solution of M2CO3 + HCL is transferred to volumetric flask and diluted to precisely 250ml. Explain why must this be done. Explain why is it not possible to titrate aliquots taken directly from the beaker
If Ka is 1.85 x 10^-5 for acetic acid, calculate the pH at one half the equivalence point and at the equivalence point for a titration of 50 mL of 0.100 M acetic acid with 0.100 M NaOH.
given that energy differences btwn two staggered conformations of 1-bromopropane is 1.4 kjmol that the energy
Write the molecular form of the equation for the reaction.
The tetrahedral intermediate in the Fischer esterification of formic acid (HCO2H) with 1-butanol has the structure
The sample is dissolved in acidic solution and the manganese is oxidized to the permanganate ion MnO4-. The MnO4- ion is reduced to Mn2+ by reacting with 50 mL of .0800 M FeSO4 solution. The excess Fe2+ ions are then oxidized to Fe3+ by 21.9 mL of..
The density of a 7.50% (m/m) solution of ammonium sulfate, (NH4)2SO4, is 1.04 g/mL.- What mass of (NH4)2SO4 would be required to prepare 750 mL of this solution?
What is the boiling point of water at an altitude where the ambient air pressure is 0.47 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
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