Find the mass (in $\mathrm{kilogram}$) of an ammonia molecule ${\mathrm{NH}}_3$.

Important Questions on Thermometry, Thermal Expansion and Kinetic Theory of Gases

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 8

Three moles of an ideal gas, having $\gamma =1.67$, are mixed with two moles of another ideal gas having $\gamma =1.4$. Find the equivalent value of $\gamma$ for the mixture.

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 9

How many degrees of freedom have the gas molecules, if under standard conditions, the gas density is $\rho =1.3 \mathrm{kg} {\mathrm{m}}^{-3}$ and velocity of sound propagation in it is $V=330 \mathrm{m} {\mathrm{s}}^{-1}$?

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 10

$4 \mathrm{g}$ hydrogen is mixed with $11.2 \mathrm{litre}$ of $\mathrm{He}$ at $\mathrm{STP}$, in a container of volume $20 \mathrm{litre}$. If the final temperature is $300 \mathrm{K}$, find the pressure.

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 11

One mole of an ideal monoatomic gas is taken at a temperature of $300 \mathrm{K}$. Its volume is doubled keeping its pressure constant. Find the change in internal energy.

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 12

Two perfect monoatomic gases at absolute temperatures $T_1$ and $T_2$ are mixed. There is no loss of energy. Find the temperature of the mixture if the number of moles in the gases are $n_1$ and $n_2$.

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 13

If the water molecules in $1.0 \mathrm{g}$ of water were distributed uniformly over the surface of the earth, how many such molecules would there be in $1.0 {\mathrm{cm}}^2$ of the earth's surface?

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 14

If the kinetic energy of the molecules in $5$ litres of helium at $2 \mathrm{atm}$ is $E$. What is the kinetic energy of molecules in $15$ litres of oxygen at $3 \mathrm{atm}$ in terms of $E$?

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 4 - Thermometry, Thermal Expansion and Kinetic Theory of Gases>Exercises>Q 15

At what temperature is the effective speed of gaseous hydrogen molecules (molecular weight$=2$) equal to that of oxygen molecules (molecular weight $=32$) at $47°\mathrm{C}$ ?