Question

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Answer 1

Answer:

a) Acc. to Charles' Law, the volume of a body is directly proportional to its absolute temperature at a constant pressure.

$\frac{v1}{t1} = \frac{v2}{t2}$

b) Absolute zero= -273 degree celcius

*

d)Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons. Correspondingly, isobars differ in atomic number.

*c) Gay Lussac Law= when both pressure and temperature are constant.

(P1V1)/T1 = (P2V2)/T2

e) Avogadro's law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law. A modern statement is: Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules

f) Standard Value of temperature= 273K

Standard Value of pressure= 760mm Hg

g)is only approximate for diffusion of one gas in another or in air, as these processes involve the movement of more than one gas. In the same conditions of temperature and pressure, the molar mass is proportional to the mass density.

Answer 2

Answer:

CHARLES LAW :

It states that the volume of a fixed mass of a gas is directly proportional to the temperature. This law applies to ideal gases held at a constant pressure, where only the volume and temperature are allowed to change.

V directly proportional T

V/T=K

where:

V is the volume of the gas,T is the temperature of the gas (measured in kelvins),k is a constant.

T-Temperature is in Kelvin (K)

Absolute Value means ...

The absolute value of −9 is 9. The absolute value of 3 is 3. The absolute value of 0 is 0. The absolute value of −156 is 156.

he variables in Gay-Lussac's law are the initial temperature (T1), the initial pressure (P1), the final temperature (T2) and the final pressure (P2)....

As nouns the difference between isochore and isobaris that isochore is (physics) a line drawn on a pressure / volume / temperature graph through all points having the same value of the volume while isobar is (meteorology) a line drawn on a map or chart connecting places of equal or constant pressure.anation:

The main applications of Avogadro's law are :

Establishes relationship between the relative vapour density of a gas and its relative molecular mass. Establishes the relationship between gram molecular weight and volume of a gas at STP.

In chemistry, IUPAC changed the definition of standard temperature and pressure (STP) in 1982: Until 1982, STP was defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 atm (101.325 kPa).

We know the ideal gas equation,

                         PV=nRT   (n=no. of moles)

                         PV=(m/M)RT  (∵n=m/M)(M=molar mass)

                           P=(m/VM)RT

                           P=(d/M)RT (∵d=m/V)

                          M=dRT/P

    Taking T and P constant,

                       ∴M∝d

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