Advertisements
Advertisements
प्रश्न
Define one calorie.
Advertisements
उत्तर
One calorie is defined as the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius at a pressure of one atmosphere.
APPEARS IN
संबंधित प्रश्न
An ideal gas is taken from (Pi, Vi) to (Pf, Vf) in three different ways. Identify the process in which the work done on the gas the most.

Define the internal energy of the system.
Did joule converted mechanical energy to heat energy? Explain.
Give the sign convention for Q and W.
Give the expression for work done by the gas.
An ideal gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 bar from an initial volume of 2.50 dm3 to a final volume of 4.50 dm3. The change in internal energy (∆U) of the gas will be ______.
An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from the surrounding. What is the change in the internal energy of the system?
(Given: 1 atm-litre = 101.3 J)
A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 Bar from an initial volume of 2.5L to a final volume of 4.5L The change in internal energy, ΔU of the gas will be ______.
The value of Δ U is ______ when 2 kJ of heat is released and 6 kJ of work is done on the system.
Calculate the change in internal energy of a gas if a gas is compressed adiabatically from 25 dm³ to 15 dm³ at constant external pressure of 4 bar.
