Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?

Related Mcqs:

A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c?

A. 283 B. 566 C. 293 D. 141.5...

The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is________________?

A. H2O > C2H5OH > CS2 B. CS2 > C2H5OH > H2O C. H2O > CS2 > C2H5OH D. CS2 > H2O > C2H5OH...

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

A. Temperature at constant humidity B. Humidity at constant temperature C. Temperature and the humidity D. All A., B. & C....

A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?

A. 350 B. 485 C. 140 D. 345...

In osmosis through a semi-permeable membrane, diffusion of the___________________?

A. Solvent is from low concentration to high concentration region B. Solvent is from high concentration to low concentration region C. Solute takes place D. None of these...