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A block of ice has the shape of a parallelopipid. It measures A cm on one edge, 2A cm on a second side, and 3A cm along the third side. If the density of ice is given by D g cm-3, and the molar heat of fusion is 6.02 kJ mol-1, obtain an expression in terms of A and D that gives the total heat needed to melt the block of ice if its temperature is the normal melting point.
In the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3)in the isolation step. Why? What gas is evolved during this washing step? Write a balanced equation for the reac..
The density of acetic acid vapor at the normal boiling point, 118.5 degrees C, is given by 3.15 g/L (normal boiling point is the boiling temperature at P = 1 atm). a) calculate the fraction of the vapor that is monomer and the fraction that is dime..
Calculate the final temperature of the helium inside the cylinder. Assume helium to be an ideal gas with Cp=(5/2)R.
what is the total number of joules of heat energy absorbed when the temperature if 200.0g of water is raised from 10 degrees celcius to 40 degrees celcius.
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
calculate the mass in grams of NaCl Present in each of the following solution A. 11.5 g Of 6.25 % NaCl Solution B. 6.25 g of 11.5 % NaCl solution
Draw the structure of the major product(s) formed when 1-hexyne is subjected to ozonolysis, followed by hydrolysis.
A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial..
solution of water (Kf = 1.86^ C/m) and glucose freezes at - 2.55^ C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ^ C.
What volumes of CO2 and NH3 at 201 atm and 450.°C are needed to produce 2.54 kg of urea, assuming the reaction goes to completion?
A bomb calorimeter whose components have a heat capacity of 6.66 kJ/°C is filled with 913 g of water. (The amount of water is not constant from experiment to experiment.
3 tons of ethanol are accidentally discharged into a lake. By how much is the biological oxygen demand of this water increased? Assume that all ethanol is transformed into CO2 and assume the lake contains 108 liters of water.
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