Recent questions tagged molecular-nature-of-matter

The number of particles in a cubic millimeter of a gas at temperature 273 K and 1.00 atm pressure is

asked Mar 27, 2014 by yamini.v

1 answer

Which of the following quantities is zero on an average for the molecules of an ideal gas in equilibrium ?

asked Mar 26, 2014 by yamini.v

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If the plot of density $\rho$ versus temperature $T$ is as given below, identify which of the following statements is incorrect?

asked Mar 11, 2014 by balaji.thirumalai

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The density of the gaseous mixture of Hydrogen and Carbon-di-Oxide is $\large\frac{30\;g}{22.4\;l}$ at NTP. What is the % composition of Hydrogen and Carbon-di-oxide by volume in the mixture respectively?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

A student while performing an experiment forgot to add the reaction mixture and started heating the open round bottom flask on the flame. If he found the temperature to be $227 ^{\circ} C$ after heating, which was $27 ^{\circ} C$ earlier, what fraction of air would have been expelled out?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

An open vessel containing 3 moles of an ideal gas at $ 300 ^{\circ}$ is heated to $ 500 ^{\circ}$. What is the number of moles left after heating?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

An oxide of nitrogen at NTP has a density equal to another oxide of Nitrogen at $12^{\circ}$. If we consider pressure conditions to be the same, what are the two oxides involved?

asked Feb 5, 2014 by balaji

1 answer

At $0^{\circ}$, the density of carbon-di-oxide is the same as that of an oxide of nitrogen. The oxide of nitrogen is which of the following, considering the pressure conditions to be the same?

asked Feb 5, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a temperature of T at pressure 2P. Gas-B is kept in the right part of the container with a temperature of 4T at pressure P. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a volume 2V at pressure P. Gas-B is kept in the right part of the container with a volume of 3V at pressure P. Both the portions are the same temperature T. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a volume V/n at pressure P. Gas-B is kept in the right part of the container with a volume of V/(n+1) at pressure P. Both the portions are the same temperature T. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Consider the following case. What is the value of P' ?

asked Jan 31, 2014 by balaji

1 answer

Which of the following quantities cannot be zero on an average for the molecules of an ideal gas in equilibrium condition?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

A vessel is filled with an ideal gas at 76 cm of Hg (mercury). The mass of gas is increased by 25% by introducing more gas at the same temperature. What is the resultant pressure of Hg in cm?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Which of the following cannot be an expression for density of an ideal gas?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Then the temperature at which the sample of gas will weight m is given by which of the following options?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. Then the number of molecules in the sample is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

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