Question

A gas contained in a closed rigid container is heated from
initial temperature and pressure of 27^{0}C and 2 bar to a
final pressure of 12 bar. Calculate final temperature, Work done,
Heat transfer and change in Internal Energy. **(Take
C _{v} as 0.873 kJ/kg K. and Mass of the gas =
1kg**)

Answer #1

Water, initially saturated vapor at 14.6 bar, fills a closed,
rigid container. The water is heated until its temperature is
200°C. For the water, determine the heat transfer, in kJ/kg.
Kinetic and potential energy effects can be ignored.

Steam is contained in a closed rigid container with a volume of
2 m3 . Initially, the pressure and the temperature of the steam are
7 bar and 400°C, respectively. The temperature drops as a result of
heat transfer to the surroundings. i. Determine the temperature at
which the condensation first occurs in °C. [6 marks] ii. Evaluate
the fraction of the total mass that has condensed when the pressure
reaches 0.75 bar. [4 marks] iii. Calculate the volume in...

Steam is contained in a closed rigid container with a volume of
2 m3 . Initially, the pressure and the temperature of the steam are
7 bar and 400°C, respectively. The temperature drops as a result of
heat transfer to the surroundings. i. Determine the temperature at
which the condensation first occurs in °C. [6 marks] ii. Evaluate
the fraction of the total mass that has condensed when the pressure
reaches 0.75 bar. [4 marks] iii. Calculate the volume in...

Consider a mole of an ideal monatomic gas, Xe, inside a
container with rigid walls. The ideal gas is heated up as a flame
is applied to the container’s exterior. The molar mass of Xe is
0.131 kg. The gas does not transfer any heat to the container.
Answer the following questions.
A.) Before the flame is lit, the pressure of the gas inside the
container is 10.1x10^5 Pa and the temperature of the gas is 295 K.
If at...

Air is contained in a rigid, well-insulated container
of volume 3 m3. The air undergoes a process from
an initial state with a pressure of 200 kPa and temperature of 300
K. During the process, the air
receives 720 kJ of work from a paddle wheel. Model the air as an
ideal gas with constant specific
heats. Evaluate the specific heats at 300 K. Neglect changes in
kinetic energy and potential energy.
Determine the mass of the air in kg,...

A closed, rigid, 0.40 m3 tank is filled with 12 kg of
water. The initial pressure is p1 = 20 bar. The
water is cooled until the pressure is p2= 4
bar.
Determine the initial quality, x1, and the heat
transfer, in kJ.

Oxygen gas is contained in a piston cylinder assembly at an
initial pressure of 1000 kPa and expands from 0.2 m3 to 1.0 m3 by a
process where PV = constant. The gas has an internal energy change
of -200 kJ. Calculate the work (kJ) and the heat transfer (kJ) done
during the process.

Water of mass 2 kg in a closed, rigid tank is initially in the
form of a twophase liquid-vapor mixture. The initial temperature is
50° C. The mixture is heated until the tank contains only saturated
vapor at 110° C.
(i) Find the initial pressure, in kPa.
(ii) Find the work for the process, in kJ.
(iii) Find the heat transfer for the process, in kJ.

An ideal monatomic gas is contained in a vessel of constant
volume 0.330 m3. The initial temperature and pressure of the gas
are 300 K and 5.00 atm, respectively. The goal of this problem is
to find the temperature and pressure of the gas after 24.0 kJ of
thermal energy is supplied to the gas.
(a) Use the ideal gas law and initial conditions to calculate
the number of moles of gas in the vessel. Your response differs
from the...

(d) In a closed industrial process 2 .5 kg of water at an
initial temperature of 15°C is continually stirred whilst being
heated. If the net heat transferred to the system is 3 kJ and the
final temperature of the water is 75°C, determine:
i.The internal energy change of the water
ii.The work transferred (stating the direction-in or out)of the
mechanical stirrer.
iii.The additional heat flow required for the same temperature
increase if there were no work transfer.
For parts...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 14 minutes ago

asked 18 minutes ago

asked 21 minutes ago

asked 24 minutes ago

asked 54 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago