Molecular Physics | Thermodynamics Answers

A 2 kg metallic object is heated to 500 c and then dropped into a bucket containing 20 kg of water initially at 20 c . when equilibrium is reached , the temperature of mixture is 70 c . what is the specific heat of metal ? ( neglect the heat capacity of container . )

A copper calorimeter has mass of 100g .the calorimeter contains water of mass 500g at a temperature of 20degree celcius how much steam must be condensed into water if the mixture has a final temperature of 50degree celcius.. assume specific heat of copper is 420j/kg/c and of water is 4186j/kg/c and latent heat of condensation of steam is 2.26*10^6

A diver observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to thesurface (where the pressure is 1.00 atm). The temperature at the bottom is 4.0°C, and the temperature at the surface is 19.0C° higher. Find the ratio of the volume of the bubble as it reaches the surface to its volume at the bottom? Doesthe bubble expand or compress in volume? Assume that the number of moles of gas in the bubble remains constant.

A 15.0-kg block of ice at 0.0°C melts to liquid water at 0.0°C inside a large room at 20.0°C. Treat the ice and the
room as an isolated system, and assume that the room is large enough for its temperature change to be ignored.
(Given that Lf = 3.34×10^5 J/kg for water)
a) Is the melting of the ice reversible or irreversible? Explain, using simple physical reasoning without resorting to
any equations.
b) Calculate the net entropy change of the system during this process. Explain whether or not this result is
consistent with your answer to part (a).

The system shown in figure consist of three spring and two rods as shown. If the temperature of the rods is increased by T, calculate the energy stored in each of the springs.The spring are relaxed

Write a summuray paragraph, which includes drawings on how molecules in a solid, liquid and gas compare to each other. And how temperature relates to kinetic energy of molecules

The engine of a Ferrari F355 F1 sports car takes in air at 20°C and 1.00 atm and compresses it adiabatically to 0.09
times the original volume. The air may be treated as an ideal diatomic gas.
a) Draw a pV-diagram for this process.
b) Find the final temperature and pressure

Two identical gas containers A and B contains the masses of molecules mA = 3.34×10-27 kg and mB = 5.34×10-26 kg,
respectively. Both gases are under the same pressure and are at 10.0°C.
a) Compare the translational kinetic energy per molecule of molecules A, B and root-mean-square (rms) speeds of
them?
b) In order have both gases with the same rms speed, we need to raise the temperature of only one of these
containers. Which gas should be raised the temperature?
c) At what temperature will you accomplish your goal?

A diver observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the
surface (where the pressure is 1.00 atm). The temperature at the bottom is 4.0°C, and the temperature at the surface is
19.0C° higher. Find the ratio of the volume of the bubble as it reaches the surface to its volume at the bottom? Does
the bubble expand or compress in volume? Assume that the number of moles of gas in the bubble remains constant.

A container holding 0.25 kg of water at 20.0c is placed into the freezer. How much energy must be removed from the water to turn into ice?