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Rijo
Subject: Physics
, asked on 4/3/18
Calculate the temperature at which rms velocity of gas molecules is double its value at
270C, pressure of the gas remaining the same.
Answer
1
Rijo
Subject: Physics
, asked on 4/3/18
Calculate the temperature at which rms velocity of gas molecules is double its value at
270C, pressure of the gas remaining the same
Answer
1
Ian Colaco
Subject: Physics
, asked on 24/2/18
State the postulates of kinetic theory of ideal gases. Write an expression for the pressure exerted by an ideal gas. Calculate r.m.s velocity of the molecules of hydrogen at S.T.P. Given density and pressure of hydrogen at S.T.P are 0.09kg m^-3 and 10.1*10^5 Pa respectively
Answer
1
Bhavika
Subject: Physics
, asked on 20/2/18
calculate the number of molecules in 2*10^6 meter cube of a perfect gas at 27° Celsius and at a pressure of 0.01 m of mercury .mean kinetic energy of a molecule at 27 C =4*10^-11J and g =9.8ms-2
Answer
1
Chhavi Tomer
Subject: Physics
, asked on 19/2/18
Please solve this
Q). A gaseous mixture enclosed in a vessel consists of 1 gram mole of a gas A with (y = 5 / 3)and another gas B with (y = 7 / 5) at a temperature T. The gases A and B do not react with each other and assume to be ideal. Find the number of gram moles of gas B if y for the gaseous mixture is 19 / 13.
Answer
1
Tulsi Mehta
Subject: Physics
, asked on 19/2/18
PLZ SHOW COMPLETE STEPS
estimate mean free path for a water molecule in water vapour at 373 K.
Answer
2
Tulsi Mehta
Subject: Physics
, asked on 19/2/18
Plz explain how the values are used here.
Pg 331, 332 kinetic theory.
Answer
1
Tulsi Mehta
Subject: Physics
, asked on 19/2/18
(b) When gas in a cylinder is compressed by pushing in a piston, its temperature rises. Guess at an explanation of this in terms of kinetic theory using (a) above.
(c) What happens when a compressed gas pushes a piston out and expands. What would you observe
(d) Sachin Tendulkar uses a heavy cricket bat while playing. Does it help him in anyway?
Answer
1
Shourya Sharma
Subject: Physics
, asked on 15/2/18
why half of the molecules move towards the wall and a half of the molecule move away from the wall in derivation of pressure of an ideal gas ?
Answer
1
Ian Colaco
Subject: Physics
, asked on 9/2/18
Show that kinetic friction is less than static friction
Answer
1
Aishwarya
Subject: Physics
, asked on 10/1/18
Solve this:
Q.Example 13.1
The density of water is 1000 kg m
–3
. The density of water vapour at 100°C and 1 atm pressure is 0.6 kg m
–3
. The volume of a molecule multiplied by the total number gives, what is called, molecular volume. Estimate the ratio (or fraction ) of the molecular volume to the total volume occupied by the water vapour under the above conditions of temperature and pressure.
Answer
1
Shreya Choudhary
Subject: Physics
, asked on 10/1/18
Solve this:
A box of negligible mass containing 2 moles of an ideal gas of molar mass M and adiabatic exponent
γ
moves with constant speed
v
on a smooth horizontal surface. If the box suddenly stops, then change in temperature of gas will be
(
1
)
(
γ
-
1
)
M
v
2
4
R
(
2
)
γ
M
v
2
2
R
(
3
)
M
v
2
2
(
γ
-
1
)
R
(
4
)
(
γ
-
1
)
M
v
2
2
R
Answer
1
Shreya Choudhary
Subject: Physics
, asked on 10/1/18
Question):- The ratio of number of collisions per second at the walls of containers by H
e
and O
2
gas molecules kept at same volume and temperature, is (assume normal incidence on walls)
1. 2 : 1
2. 1 : 2
3.
2
2
:
1
4.
1
:
2
2
Answer
1
Shreya Choudhary
Subject: Physics
, asked on 9/1/18
for an ideal gas fractional change in its volume per degree rise in temperature at constant pressure is equal to (1)T0 (2) T (3)T^-1 (4)T2 wherte T is absolute temperature of the gas
Answer
1
Shreya Choudhary
Subject: Physics
, asked on 9/1/18
Q- Which of the following gas possesses maximum rms velocity? Ali being at same temperature
(1) Oxygen
(2) Carbon dioxide
(3) Hydrogen
(4) Helium
Answer
2
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270C, pressure of the gas remaining the same.
270C, pressure of the gas remaining the same
Q). A gaseous mixture enclosed in a vessel consists of 1 gram mole of a gas A with (y = 5 / 3)and another gas B with (y = 7 / 5) at a temperature T. The gases A and B do not react with each other and assume to be ideal. Find the number of gram moles of gas B if y for the gaseous mixture is 19 / 13.
estimate mean free path for a water molecule in water vapour at 373 K.
Pg 331, 332 kinetic theory.
(c) What happens when a compressed gas pushes a piston out and expands. What would you observe
(d) Sachin Tendulkar uses a heavy cricket bat while playing. Does it help him in anyway?
Q.Example 13.1 The density of water is 1000 kg m–3. The density of water vapour at 100°C and 1 atm pressure is 0.6 kg m–3. The volume of a molecule multiplied by the total number gives, what is called, molecular volume. Estimate the ratio (or fraction ) of the molecular volume to the total volume occupied by the water vapour under the above conditions of temperature and pressure.
A box of negligible mass containing 2 moles of an ideal gas of molar mass M and adiabatic exponent moves with constant speed on a smooth horizontal surface. If the box suddenly stops, then change in temperature of gas will be
1. 2 : 1
2. 1 : 2
3.
4.
(1) Oxygen
(2) Carbon dioxide
(3) Hydrogen
(4) Helium