5.2 Calculate the entropy change for each of the following:
(a) 10g of steam at l00°C and a pressure of one atmosphere condensing into water at the same temperature and pressure. (The latentheat of vaporization of water is 22571 Jg^-1).
(b) 10g of water at l00°C and a pressure of one atmosphere cooling to 0°C at the same
100 g of ice is melted at 0 degree C, and the resulting water is warmed to room temperature (25 degree C). Calculate delta S (change in entropy) for this whole process and comment on the relative magnitude of the entropy changes for the two steps. Explain the sign of delta S.
Problem: Which would require more heat, melting 500 g of 00C ice or turning 500 g of 1000C water into steam?
Problem: A 500g sample of an unknown material requires 750 calories of heat to raise its temperature by 500C. Use equation to solve the problem.
Calculate the latentheat of fusion from the heat balance equation. Compare this value with the value given in the textbook.
1. What would the temperature of the calorimeter mixture be if you added too much ice and not all of it melted?
2. What affect would there be on the calculated value of L if we read the final mixtu
1) 1 kg of ice is taken from a temperature of -34 o C into steam at 161 o C. To the nearest kJ what is the energy used?
2) 2 kg of ice at 0 oC is dropped into 3.99 kg of water at 13 oC. To two decimal places what fraction of the ice melts?
3) 1 kg of ice at -30 oC is dropped into 25 kg of water at 56 oC. To the nearest t
I have the data but I am having a hard time determining the end result.
How much heat energy is required to raise the temp. of 5.0g of H20 from -10C to 110C ? (ice to steam)
Given the following data:
SpecificHeat J/gK Molar Heat Capacity J/molK Formula Mass
Water (l) 4.184
A 40 g block of ice is cooled to -78 degrees C and is then added to 560 g of water in an 80 g copper calorimeter at a temperature of 25 degrees C
Determine the final temperature of the system consisting of the ice, water and calorimeter. If all the ice melts, determine how much ice is left.
Remeber that the ice must fir