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Molecular Physics | Thermodynamics
A Glass beaker is filled to the top with 800 cm3 of mercury. if the temperature of the mercury is raised from 0C to 368 K, how much mercury will spill out?
Molecular Physics | Thermodynamics
A 500g lead mass is heated to 150 C and placed on a block of ice at -10 C. How much ice, if any will melt?
Molecular Physics | Thermodynamics
How many grams of steam at 110 C must be added to 1kg of ice a 0 C to melt it without raising its temperature?
Molecular Physics | Thermodynamics
One kilogram of air in a piston-cylinder assembly undergoes two processes in series from an initial state where P1=0.5MPa, T1=227C.
Process 1-2: Constant temperature expansion until the volume is twice the initial volume.
Process 2-3: Constant-volume heating until the pressure is again 0.5MPa
a) Sketch the two processes in series on a clearly labeled P-v diagram.
b) Assuming ideal gas behaviour, determine:
(i) The pressure at state 2, in MPa
(ii) The temperature at state 3, in C
(iii) For each of the two processes the work and heat transfer, each in kj
Process 1-2: Constant temperature expansion until the volume is twice the initial volume.
Process 2-3: Constant-volume heating until the pressure is again 0.5MPa
a) Sketch the two processes in series on a clearly labeled P-v diagram.
b) Assuming ideal gas behaviour, determine:
(i) The pressure at state 2, in MPa
(ii) The temperature at state 3, in C
(iii) For each of the two processes the work and heat transfer, each in kj
Molecular Physics | Thermodynamics
P0 = 100kpa. Two set of stops, lower stops are stops 1 while the upper stops are stops 2.
A 30 kg piston is resting on stops 1. Volume under stop 1 is 0.2m^3 and volume under stop 2 is 0.7m^3. Therefore, the min volume is 0.2m^3 while the max volume is capped at 0.7m^3. 0.5kg of water underneath the piston, currently at 30C. The water is heated to 105C.
1) Does the piston float off stops 1 at the end of the process? If the piston does, does it hit stop 2?
2) What is the work done? What is the heat transfer?
A 30 kg piston is resting on stops 1. Volume under stop 1 is 0.2m^3 and volume under stop 2 is 0.7m^3. Therefore, the min volume is 0.2m^3 while the max volume is capped at 0.7m^3. 0.5kg of water underneath the piston, currently at 30C. The water is heated to 105C.
1) Does the piston float off stops 1 at the end of the process? If the piston does, does it hit stop 2?
2) What is the work done? What is the heat transfer?
Molecular Physics | Thermodynamics
In each cycle of a Carnot engine, 122 J of heat is absorbed from the high-temperature reservoir and 55 J is exhausted to the low-temperature reservoir.
What is the efficiency of the engine?
What is the efficiency of the engine?
Molecular Physics | Thermodynamics
How many calories of heat does it take to raise 100h of lead from 20˚ C to 30˚ C? The specific Heat of lead is 0.031 Calorie/gram˚C. Round your answer to the nearest whole number.
Molecular Physics | Thermodynamics
How many calories of heat does it take to raise 500g of water from 20˚ C to 30˚ C? The specific Heat of water is 1.0 Calorie/gram˚C. Round the answer to the nearest whole number please!
Molecular Physics | Thermodynamics
How much heat is lost by 5.0 grams of water if the temperature falls from 30 degrees Celsius to 26 degrees Celsius. The specific heat of water measured in joules is 4.184 Joules/g˚C
Molecular Physics | Thermodynamics
If 200g of water at 20 degrees Celsius is combined with 100g of water at 80 degrees Celsius, what is the final temperature of the 200g of water?
