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Answer:

If we have a pure gas, there is one phase and one COMPONENT, and HENCE two degrees of freedom. ... If we have a liquid and its VAPOUR in equilibrium, there are two PHASES and one component, and hence F = 1. We can VARY P or T, but not both independently if the system is to remain in equilibrium

Explanation:

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Answer:

Explanation:

Reversible means that in principle, the process is DONE infinitely slowly so that the microscopic reverse from the final state exactly regenerates the initial state. This requires an exact functional form of whatever term you are integrating.

Isothermal just means constant temperature, i.e.  

Δ

T

=

T

2

−

T

1

=

0

.

Expansion means an increase in volume...

Hence, a reversible isothermal expansion is an infinitely-slow increase in volume at constant temperature.

For an ideal GAS, whose internal energy  

U

is only a function of temperature, we thus have for the first law of thermodynamics:

Δ

U

=

q

r

e

v

+

w

r

e

v

=

0

Thus,  

w

r

e

v

≡

−

∫

P

d

V

=

−

q

r

e

v

, where work is done is from the perspective of the system and  

q

is heat flow.

This also means that...

All the reversible isothermal PV work  

w

r

e

v

done by an ideal gas to expand was possible by reversibly absorbing heat  

q

r

e

v

into the ideal gas.

CALCULATION EXAMPLE

Calculate the work performed in a reversible isothermal expansion by  

1

m

o

l

of an ideal gas from  

22.7

L

to  

45.4

L

at  

298.15

K

and a  

1

b

a

r

initial pressure.

With the ideal gas law, we have that  

P

V

=

n

R

T

, or  

P

=

n

R

T

V

. So, the work is:

w

r

e

v

=

−

∫

V

2

V

1

P

d

V

=

−

∫

V

2

V

1

n

R

T

V

d

V

=

−

n

R

T

ln

V

2

−

(

−

n

R

T

ln

V

1

)

=

−

n

R

T

ln

(

V

2

V

1

)

,

negative with RESPECT to the system.

We keep in mind that the pressure did change, but we don't have an idea of how, off-hand. The work thus does not require the USE the pressure of  

1 bar

:

w

r

e

v

=

−

(

1 mol

)

(

8.314472 J/mol

⋅

K

)

(

298.15 K

)

ln

(

45.4 L

22.7 L

)

=

−

1718.3 J

(however, one could use the ideal gas law to write  

ln

(

V

2

V

1

)

=

ln

(

P

1

P

2

)

in this constant-temperature situation.)

So, the work involved the ideal gas exerting  

1718.3 J

of energy to expand, due to the  

1718.3 J

of heat it absorbed into itself:

Δ

U

0

for isothermal process

=

q

r

e

v

+

w

r

e

v

⇒

q

r

e

v

=

−

w

r

e

v

=

+

1718.3 J

Answer:

some ultraviolet light makes it to SEA level. Astronomers can observe some infrared wavelengths by putting telescopes on mountain tops. Balloon experiments can REACH 35 km above the SURFACE and can operate for MONTHS. Rocket flights can take instruments all the way above the Earth's atmosphere, but only for a few minutes before they fall back to Earth.

For long-term observations, however, it is best to have your detector on an ORBITING satellite and get above it all!

Updated: March 2013

Answer:

equilibrium, then no CONDITION need to be specified. The system is. THEREFORE zero VARIANT or invariant or has no degree of freedom. In this system if PRESSURE or temperature is altered , three.

ANSWER:

mitti

Explanation:

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ANSWER:

The MOLAR MASS and MOLECULAR weight of Li4Cl 4 is 169.576.

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ANSWER:

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ANSWER:

Ductility is a mechanical property commonly described as a material's amenability to DRAWING (e.g. into wire).[1] In MATERIALS science, ductility is DEFINED by the degree to which a material can sustain plastic deformation under tensile stress before failure.[2][3] Ductility is an important consideration in engineering and manufacturing, defining a material's suitability for certain manufacturing operations (such as COLD working) and its capacity to absorb mechanical overload.[4] Materials that are generally described as ductile include gold and copper.[5]

Explanation:

1+1=?? if 1+1=2 then it should be 11 or what is the CORRECT answer of 1+1 and 2+2 and how it should be 1+1=11 or 2 and 2+2=4 or 22 and i WANT answer what i am asking to you and i dont KNOW what i am saying :/

ANSWER:

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ANSWER:

CORRECT answer:

11.2 cc (STP) of NITROGEN and 0.015 G of nitric oxide

Explanation:

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ANSWER:

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ANSWER:

OPTION C is CORRECT ANS. . . . . . . .

ANSWER:

If it is a regular hexagon, all the SIDES and ANGLES are equal. so each angle of a regular hexagon is 7206=120 . THUS, a regular hexagon has zero right angles.

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Answer:

ARTIFICIAL is the error and EVEN COMMA is the error...

spoilage of food is an undesirable and ____change...

ANSWER:

dkritig8t8r9e9r9r9w0q0e0r9e9q9291o1

Answer:

1.429 kg/m³

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Explanation:

the molecular mass of H2O is 18amu

the MOLAR mass of H2O is 18 gram

no. of MOLES in 36 g of WATER= 36/18=2moles

Answer:

Cetirizine Hydrochloride

4H2 (Cetirizine Hydrochloride 10 MG)

Cetirizine is used in the treatment of allergic RHINITIS; URTICARIA and BELONGS to the drug class antihistamines.

ANSWER:

To enable the students to understand the importance of freedom.

To enable the students to understand the dangers of DEFORESTATION and blessings of forestation.

To enable the students to understand that all animals will be happy only in their NATURAL habitat.

To enable the students to understand the RESPONSIBILITY of present generation in preserving the environment and earth.

To enable the students to learn to recite poem with proper intonation and rhythm.

ANSWER:

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Explanation:

Answer:

The molecule CaOCl2 can be written as CA(OCl)Cl. It contains 2 Cl atoms of different oxidation STATE. The ION Cl- is in -1 oxidation state and OCl- ion is in +1 oxidation state

Answer:

Acidified WATER

Pure water doesn't decompose when ACID is ADDED then it decompose on electrolysis

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EXPLANATION In BIHAR HO to kankarbagh

Answer:

A substance which burns in air and tends to produce HEAT and light is KNOWN as COMBUSTIBLE substances.

Examples – DIESEL, petrol, KEROSENE.

⍨

N'oubliez pas que vous devez m'envoyer LES exercices. -» Envoyez- par courrier.

N'oubliez pas que vous devez m'envoyer les exercices. -» Envoyez- par courrier.8. Nadine a dit à PAUL qu'elle LE quittait, MAIS elle a dit devant TOUT le monde

b. ch cooh

Explanation:

CHOIS an aldehyde GROUP so 2 nd may be the ANSWER I THINK so

ANSWER:

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Explanation:

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लपदलपदटथठरठदठलठदठरठयथठटजथटदटदटदट़

ANSWER:

OPTION FIRST is INCORRECTLY REPRESENTED

ANSWER:

you are not GOING ANYWHERE else but I am a c of my friends in my family who eats me for the SAKE and ARRANGE to the people I see as

ANSWER:

VALENCY of A is 3 and valency of B is 1

Answer:

Torna Fort, ALSO known as Prachandagad, is a large fort LOCATED in Pune district, in the Indian state of MAHARASHTRA. It is historically significant because it was the first fort captured by [[Chattrapati SHIVAJI Maharaj ]] in 1646, at the age of 16. Torna Fort, also known as Prachandagad, is a large fort located in Pune district, in the Indian state of Maharashtra. It is historically significant because it was the first fort captured by [[Chattrapati Shivaji Maharaj ]] in 1646, at the age of 16. Taramati was a dancer and singer par excellence and devoted her entire life to her art. She used to entertain people at the Taramati Baradari. A LEGEND says that Taramati continued dancing even when Emperor Aurangzeb had asked her to stop.

Answer:

A MIXTURE is a physical blend of two or more components, each of which retains its own identity and PROPERTIES in the mixture .

Explanation:

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ANSWER:

Fluoroantimonic acid

Explanation:

● The SPEED of LIGHT is about in VACUUM or AIR.

Answer:

If DISPLACEMENT vectors A, B, and C are added together, the RESULT will be VECTOR R. As shown in the diagram, vector R can be

ANSWER:

A. SOLUBILITY IM WATER B. m

ANSWER:

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ANSWER:

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ANSWER:

N-s

l-1

ml-(-1)

MS -(+1/2)

ANSWER:

We know that WATER exists in all THREE states of matter. Water exists as ice in solid form, as water in liquid form, and as VAPOUR in gaseous form. These interconversion of states of matter are visible to a common man in his day to day LIFE.

ANSWER:

OXYGEN - 8

Phosphurus - 15

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Answer:

AU(II) is DISPROPORTIONATE

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ANSWER:

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ANSWER:

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ANSWER:

Explanation:

AMINES are derivatives of ammonia in which ONE or more of the hydrogen atoms are replaced by an alkyl or aryl GROUP. ... In the chemical industry, amino compounds and other derived compounds are USED for a number of applications.

SOLUTION :

the detection of basic RADICALS DEPENDS on the behaviour of ions in solution for this purpose the preparation of ORIGINAL solution is necessary as it FURNISHES free ions in solution.

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ANSWER:

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ANSWER:

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