Physics, 13.12.2019 17:31 angelread53621

An ideal monatomic gas at a pressure of 2.0×105n/m2 and a temperature of 300 k undergoes a quasi-static isobaric expansion from 2.0×103to4.0×103cm3.

(a) what is the work done by the gas?
(b) what is the temperature of the gas after the expansion?
(c) how many moles of gas are there?
(d) what is the change in internal energy of the gas?
(e) how much heat is added to the gas?

Answers: 1

Show answers

Answers

Answer from: JERosa12356

a) W= 400 J

b) $T_{2}=600 K$

c) n=0.16 mol

d) $\Delta E_{int}=598 J$

e) Q=998 J

Explanation:

a) Let's recall the definition of work.

$W=\int^{Vf}_{V0}PdV$

Because the system is a quasi-static isobaric expansion, P is constant here, therefore:

$W=P\int^{Vf}_{V0}dV=P(V_{f}-V_{0})$

$W=2.0\cdot 10^{5}(4.0\cdot 10^{-3}-2.0\cdot 10^{-3})= 400 [Nm^{2}]$

b) Using the ideal gas equation we have:

$\frac{P_{1}V_{1}}{T_{1}}=nR$ (1)

and $\frac{P_{2}V_{2}}{T_{2}}=nR$ (2)

We can note that n times R is a constant in (1) and (2), so we can equal those equations.

$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$ (3)

Let's solve T₂ for (3), let's recall that P₁ = P₂, so they canceled out

$T_{2}=T_{1}\cdot V_{2}/V_{1}$

$T_{2}=300\cdot 4x10^{3}/2x10^{3}=600 K$

c) Using the equation of ideal gas we have:

$\frac{P_{1}V_{1}}{RT_{1}}=n$

$n=\frac{P_{1}V_{1}}{RT_{1}}=0.16 mol$

d) We can write the internal energy as a function of Cv, and as we know the Cv is 1.5R for a monoatomic gas.

$\Delta E_{int}=n1.5R\Delta T$

$\Delta E_{int}=0.16\cdot 1.5\cdot 8.3 \cdot (600-300)$

$\Delta E_{int}=598 J$

e) Using the first law of thermodynamic, we have:

$\Delta E_{int}=Q-W$

Finally,

$Q=\Delta E_{int}+W=598+400=998 J$

Have a nice day!

Answer from: Quest

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this

Answer from: Quest

That would be kinetic energy

Another question on Physics

Physics, 22.06.2019 04:00

What is the final velocity of the initial velocity of 25 and -50?

Answers: 2

Answer

Physics, 22.06.2019 08:40

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

Answers: 2

Answer

Physics, 22.06.2019 15:50

How many neutrons does plutonium -196 with an atomic number of 78.

Answers: 3

Answer

Physics, 22.06.2019 18:20

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b

Answers: 2

Answer

You know the right answer?

An ideal monatomic gas at a pressure of 2.0×105n/m2 and a temperature of 300 k undergoes a quasi-sta...

Questions