a) A typical room contains 2500 moles of air. Treating it like an ideal gas, find the changes in internal energy of this air when the room is cooled from 23.0°C to 11.6°C at a constant pressure of 1atmosphere (take y=1.400)

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a) A typical room contains 2500 moles of air. Treating it like an ideal gas, find the
changes in internal energy of this air when the room is cooled from 23.0°C to 11.6°c
at a constant pressure of 1atmosphere (take y=1.400)
b) An ideal gas of volume V-0.1 m at temperature of 273.15 K and a pressure of 10
Nm2 expands reversibly to 3 times its volume. Calculate work done:
a. At constant pressure
b. At constant temperature
c) State the first law of thermodynamics
d) One gram (1g) of water (1cm) becomes 1671 cm of steam when boiled at
constant pressure at 1.013x10 pa. the latent heat of vaporization at this pressure is
Lv=2.256×10°J/Kg. Find :-
a. Work done by water when it vaporizes
b. Its increase in internal energy
e) Distinguish between temperature and heat and state Sl unit of each.
f) One hundred grams of CO2 occupies a volume of 55 litres at a pressure of 1atm.
a. Find the temperature
b. If the volume is increased to 80 L and temperature is kept constant,
determine the new pressure
Transcribed Image Text:a) A typical room contains 2500 moles of air. Treating it like an ideal gas, find the changes in internal energy of this air when the room is cooled from 23.0°C to 11.6°c at a constant pressure of 1atmosphere (take y=1.400) b) An ideal gas of volume V-0.1 m at temperature of 273.15 K and a pressure of 10 Nm2 expands reversibly to 3 times its volume. Calculate work done: a. At constant pressure b. At constant temperature c) State the first law of thermodynamics d) One gram (1g) of water (1cm) becomes 1671 cm of steam when boiled at constant pressure at 1.013x10 pa. the latent heat of vaporization at this pressure is Lv=2.256×10°J/Kg. Find :- a. Work done by water when it vaporizes b. Its increase in internal energy e) Distinguish between temperature and heat and state Sl unit of each. f) One hundred grams of CO2 occupies a volume of 55 litres at a pressure of 1atm. a. Find the temperature b. If the volume is increased to 80 L and temperature is kept constant, determine the new pressure
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