The specific heats of iodine vapours and solid are 0.031 and 0.055 Cal/g respectively. If heat of sublimation of iodine is 24Cal/g at 200”C, What is its value at 250”C.

 

How much heat is produced when 4.50g methane gas is burnt in a constant pressure system.

 

Two mol of an ideal gas is expanded isothermally and reversibly at 300 K to twice the original volume. Calculate q, w, E, and H.