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The value of the gas constant R is - Chemistry

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प्रश्न

The value of the gas constant R is

पर्याय

  • 0.082 dm3 atm

  • 0.987 cal mol-1 K-1

  • 8.3 J mol-1 K-1

  • 8 erg mol-1 K-1

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उत्तर

8.3 J mol-1 K-1

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पाठ 6: Gaseous State - Evaluation [पृष्ठ १७९]

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सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
पाठ 6 Gaseous State
Evaluation | Q I. 10. | पृष्ठ १७९

संबंधित प्रश्‍न

Answer in one sentence.

When a gas is heated the particles move more quickly. What is the change in the volume of a heated gas if the pressure is kept constant?


If the density of a gas is measured at constant temperature and pressure then which of the following statement is correct?


A bottle of ammonia and a bottle of HCl connected through a long tube are opened simultaneously at both ends. The white ammonium chloride ring first formed will be


Consider the following statements

i) Atmospheric pressure is less at the top of a mountain than at sea level

ii) Gases are much more compressible than solids or liquids

iii) When the atmospheric pressure increases the height of the mercury column rises

Select the correct statement


At identical temperature and pressure, the rate of diffusion of hydrogen gas is `3sqrt3` times that of a hydrocarbon having molecular formula CnH2n–2. What is the value of n?


Give a suitable explanation for the following facts about gases.

Gases don’t settle at the bottom of a container


Why do astronauts have to wear protective suits when they are on the surface of the moon?


A combustible gas is stored in a metal tank at a pressure of 2.98 atm at 25°C. The tank can withstand a maximum pressure of 12 atm after which it will explode. The building in which the tank has been stored catches fire. Now predict whether the tank will blow up first or start melting? (Melting point of the metal = 1100 K).


The density of an ideal gas can be expressed as d = ____________.


An oxygen cylinder of volume 30 litres has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature 27°C. The mass of the oxygen withdrawn from the cylinder is nearly equal to:

[Given: R = `100/12`Jmol−1 K−1,and molecular mass of 12 O2 = 32, 1 atm pressure = 1.01 × 105 N/m]


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