When diatomic gases are heated, their heat capacity exhibits a peak in the high-temperature region. SilTIi lar behavior is observed in multi atornic gases. What. is the explanation for this?

The heat capacities of the following gases at room temperature are such that .

What happens when ferromagnetic substance is heated to high temperature?

The molar heat capacity at constant pressure of all diatomic gases is always same.

Fig. shows a horzontal cylindrical container of length 30 cm , which is partitioned by a tight-fiting separator. The separator is diathermic but conductws heat very slowly. Initially the separator is the state shown in the figure. The temperature of left part of cylinder is 100 K and that on right part is 400 K . Initially the separator is in equilibrium. As heat is conducted from right to left part, of separator after a long when gases on the two displacement of separator after a long when gases on the two parts of cylinder are in thermal equilibrium.

A metal block is placed in a room which is at 10^(@)C . It is heated by an electric heater of power 500 W till its temperature becomes 50^(@)C . Its initial rate of rise of temperature is 2.5^(@)C//sec . The heater is switched off and now a heater of 100 W is required to maintain the temperature of the block at 50^(@)C . (Assume Newtons Law of cooling to be valid) (i) What is the heat capacity of the block ? ( ii ) What is the rate of cooling of block at 50^(@)C if the 100W heater is also switched off ? (iii) What is the heat radiated per second when the block was 30^(@)C ?

Gibbs-Helmoholtz equation relates the free energy change to the enthalpy and entropy changes of the process as (DeltaG)_(PT) = DeltaH - T DeltaS The magnitude of DeltaH does not change much with the change in temperature but the enrgy factor T DeltaS changes appreciably. Thus, spontaneity of a process depends very much on temperature. When CaCO_(3) is heated to a high temperature, it undergoes decomposition into CaO and CO_(2) whereas it is quite stable at room temperature. The most likely explanation of its is

Two cylinders of equal size are filled with equal amount of ideal diatomic gas at room temperature. Both the cylinders are fitted with pistons. In cylinder A the piston is free to move, while in cylinder B the piston is fixed. When same amount of heat is added to both the cylinders, the temperature of the gas in cylinder A raises by 20 K. What will be the rise in temperature of the gas in cylinder B?