Two 20.0 g ice cubes at –14.0 °C are placed into 275 g ofwater at 25.0 °C. Assuming no energy is transferred to orfrom the surroundings, calculate the final temperature, T;, ofthe water after all the ice melts.heat capacity of H,0(s)heat capacity of H,O(1)enthalpy of fusion of H,O37.7 J/(mol-K)75.3 J/(mol-K)6.01 kJ/mol

Given,Molar Heat Capacity of H2O(s) = 37.0 J/mol.K Molar Heat 2 Capacity of H O(l)= 75.3 J/mol.K…

Answered: Two 20.0 g ice cubes at –14.0 °C are…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter10: Liquids And Solids

Section: Chapter Questions

Problem 102E: A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g water and 50.0 g ice,...

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A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g water and 50.0 g ice, both at 0C. The reaction is 2Na(s)+2H2O(l)2NaOH(aq)+H2(g)H=368kJ Assuming no heat loss to the surroundings, will the ice melt? Assuming the final mixture has a specific heat capacity of 4.18 J/gc, calculate the final temperature. The enthalpy of fusion for ice is 6.02 kJ/mol.
What mass (g) of ethanol, CH3CH2OH(), can be vaporized at its boiling point of 78.4 C by transfer of 500. kJ to the liquid? The vapH of ethanol is 38.6 kJ/mol at this temperature.
What quantity of energy does it take to convert 0.500 kg ice at 20.C to steam at 250.C? Specific heat capacities: ice, 2.03 J/g C; liquid, 4.2 J/g . C; steam, 2.0 J/g C; Hvap = 40.7 kJ/mol; Hfus = 6.02 kJ/mol.
Why are steam burns so much worse than water burns even if the H2O is at the same temperature for both phases? Hint: Consider the heat of vaporization of water.
If you want to convert 56.0 g ice (at 0 °C) to water at 75.0 °C, calculate how many grams of propane, C3H8, you would have to bum to supply the energy to melt the ice and then warm it to the final temperature (at 1 bar).
The enthalpy of vaporization of CO2(l) is 9.8 kJ/mol. Would you expect the enthalpy of vaporization of CS2(l) to be 28 kJ/mol, 9.8 kJ/mol, or 8.4 kJ/mol? Discuss the plausibility of each of these answers.
When I mole of benzene is vaporized at a constant pressure of 1.00 atm and at its boiling point of 353.0 K, 30.79 kJ of energy (heat) is absorbed and the volume change is +28.90 L. What are E and H for this process?
A 1.40-g sample of polyethylene, a common plastic, is dissolved in enough organic solvent to give 100.0 mL of solution. What is the average molar mass of the polymer if the measured osmotic pressure of the solution is 1.86 mm Hg at 25 C?

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