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Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
The r.m.s. velocity of hydrogen at 27oC, R = 8.314 J mol-1 K-1 is :
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
The R.M.S. speed of the molecules of a gas of density 4 kg m-3 and pressure 1.2 * 105 N m-2 is :
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
The R.M.S. velocity of a gas whose each molecule weighs 10-12 g and at temperature 27oC is :
Monobikash Deb asked a question
Subject: Chemistry, asked on on 28/4/16
the van der waal's constant "b" for a gas is 4.2 x 10-2 L mol-1. H owclose the nuclei of the two molecules can come together .
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
The most probable velocity of a neutron at 20oC is nearby :
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
Temperature at which r.m.s. speed of O2 is equal to that of neon at 300 K is :
Neha Vagh asked a question
Subject: Chemistry, asked on on 7/8/16
400 ml of oxygen at 27 degree Celsius were cooled to 15 degree Celsius without the change in pressure . calculate the contraction in volume. plzzz ans bcoz i m not getting the exact energy which is given in book
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
The temperature at which CO2 has the same R.M.S. speed to that of O2 at S.T.P. is/are :
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
What is the total translational and rotational energy of 1 mole of oxygen at 300 K. R = 8.314 Jmol-1 K-1
Udai Vignesh asked a question
Subject: Chemistry, asked on on 7/9/17
When 100ml sample of methane and ethane along with excess of oxygen is subjected to electric spark , the contraction in volume was observed to 212ml , when resulting gas is passed through KOH solution , further contraction in volume was ?
Sukanya Roy asked a question
Subject: Chemistry, asked on on 27/7/16
what will happen if the gas molecules undego an in elastic collision? why dontinelastic collisions occur if we take gases in a container
Sukanya Roy asked a question
Subject: Chemistry, asked on on 27/7/16
PV=nRT this is the ideal gas eqation . no gas can be an ideal gas. but we use this equation in almost all types of problems. how can we consider some gas as an ideal gas? all gases are real gases,how can we use this eq for real gases? so are we actually using d wrong formula? if this is the case then this gas equation doesnt have any meaning at all.then why are we having such an eq?
Ritik asked a question
Subject: Chemistry, asked on on 6/10/16
 2 flasks of equal volume connected by a narrow tube ( of negligible volume ) are at 27C and contain 0.70 mole of H2 at 0.5 atm pressure . one of the flask is then immersed into bath at 127C while other remains at 27C . calculate the final pressure and the number of moles of H2 in each flask .
Sai Prasad B asked a question
Subject: Chemistry, asked on on 6/3/17
​Mow much water vapour is contained in a cubic room of 4 m along an edge if the relative humidity is 50% and the temperature is 27°C? I he vapour pressure of water at 27°C is 26.7 torr. (The relative humidity expresses the partial pressure of water as a per cent of water vapour pressure).  
Rashmika B asked a question
Subject: Chemistry, asked on on 23/7/16
What is the difference between gay lussacs law and charles law?? They have the same mathematical expression!
Karan Thobhani asked a question
Subject: Chemistry, asked on on 28/11/16
At 20ºC two balloons of equal volume and porosity are filled to a pressure of 2 atm, one with 14 kg N2 & other with 1 kg H2 . The N2 balloon leaks to a pressure of 1/2 atm in one hour. How long will it take for H2 balloon to leaks to a pressure of 1 atm.
​                                                           2
Shifa asked a question
Subject: Chemistry, asked on on 11/6/16
15Lof a gas at stp is subjected to 4 different conditions of temperature and pressure. In which case volume remain constant?
a) 273K,2 bar
b)273 C, 0.5 atm
c. 273 c and 2 atm
d. 546 c , 1.5 atm
Krishna Vamsi asked a question
Subject: Chemistry, asked on on 20/7/16
at what temperature will be the rate of diffusion of N2 be 1.6 times the rate of diffusion of So2 at 27 degrees c
Nidhi Baghel asked a question
Subject: Chemistry, asked on on 25/7/17
What is the height of H2O column (in m) that could be maintained by normal atmospheric pressure (= 1 atm)? Given that d(Hg) = 13.6 g/cm cube and d(H2O) = 1.00 g/cm cube.
Amaan Laskar asked a question
Subject: Chemistry, asked on on 14/6/16
the compressibility factor for a real gas at high temp is-
Monobikash Deb asked a question
Subject: Chemistry, asked on on 28/4/16
what is the the r.m.s speed of a mist particle of mass 10-15 kg at 300 k
Kshitij Gaur asked a question
Subject: Chemistry, asked on on 23/7/16
Aluminium is a highly electropositivemetal but still its oxides can be acidic. Why? If metallic character increase the basicity, then why there are chances of acidic oxides of Aluminium?
Pianist asked a question
Subject: Chemistry, asked on on 28/8/17
 
What is the answer to this question? Give reasons for not choosing other options.
Which of following statements justifies the use of Boyles law? 
A. Gases are compressible. 
B. Gases expand on heating. 
C. Pressure of a gas is independent of its temperature. 
D. For a given mass of a gas, pressure and volume remain the same. 
 
Pianist asked a question
Subject: Chemistry, asked on on 4/9/17
A classroom consists 13 equidistant desks. If nitrous oxide(laughing gas) is released from the first desk and tear gas C6H11OBr is released from last desk. Find out the desk from 1st at which student starts laughing and weeping simultaneously. No links please
Krishna Vamsi asked a question
Subject: Chemistry, asked on on 20/7/16
180 ml of hydro carbon having the molecular weight 16 diffuses in 1.5 min.under similar condition time taken by 120 ml of so2 to diffuse is
Amaan Laskar asked a question
Subject: Chemistry, asked on on 14/6/16
units of a and b in vanderwaals equation
Neha Jain & 1 other asked a question
Subject: Chemistry, asked on on 10/8/16
​I CANT UNDERSTAND PARTIAL PRESSURE
OR HOW P IS INVERSLY PROPORTION TO VOLUME I CANT UNDERSTAND
Sukanya Roy asked a question
Subject: Chemistry, asked on on 27/7/16
we have a cylinder which has a capacity of 12 atm at . now if we reduce the pressure to a low value like 3 atm, at 300k . if the temperature is more than 1200k ,the cylinder will explode.we found yhis value using gay lussac's law. but here in today's class we learnt that the KE of gases produces thermal energy. if the pressure of the gas is less how can so much heat get produced? is this example violating the kinetic molecular theory of gases?
Sukanya Roy asked a question
Subject: Chemistry, asked on on 27/7/16
at 0k the kinetic energy of a gas becomes 0 i.e. the velocity of the gas becomes 0. at this moment the molecular mootion ceases. can this temperature be attained by physical means? if we get these then wat happens to the gas? will it get converted into a bose-einstien condonsate
Neha Jain & 1 other asked a question
Subject: Chemistry, asked on on 10/8/16
According to kinetic molecular theory of gases, PV=mnc^2+3 where c=rms velocity of the gas. Now if we create a condition where the rms velocity gets converted to the speed of light then what would happen to this gas? (assumed condition:we can create very high temperatures in laboratory i.e.upto 1,85,25,727k)
Anurag Pawar asked a question
Subject: Chemistry, asked on on 1/8/17
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Pianist asked a question
Subject: Chemistry, asked on on 10/9/17
Q. Find out the pressure of gas using the following diagram.
Pianist asked a question
Subject: Chemistry, asked on on 2/9/17

Explain this question. From where did the temperature come to be 300K. Why R is taken in ergs not in joule? What is deg written after ergs in units of R ??
 
Pianist asked a question
Subject: Chemistry, asked on on 19/8/17
explain this question.
Monobikash Deb asked a question
Subject: Chemistry, asked on on 26/4/16
how many molecules per cc of gas would contain at -33 degree centigrade and 726 torr
Monobikash Deb asked a question
Subject: Chemistry, asked on on 28/4/16
calculate the kinetic energy of hydrogen if its density at 101.325 k Pa is 0.09 kg m​-3​​​
Pianist asked a question
Subject: Chemistry, asked on on 28/8/17
In graphs of boyle's law, it is written that value of K is variable for each curve in the same graph. How is that possible?
Dhruvin Pandya asked a question
Subject: Chemistry, asked on on 5/9/18
Three times at three different values of constant pressure are given. Which of the following relations is correct?

Options:
P1= P2> P3
P3= P2> P1
P1> P2> P3
P3> P2> P1
Bhavya Arora asked a question
Subject: Chemistry, asked on on 12/9/17
From the expression we have [r inversely proportional to square root of temperature ] that increase in temperature will decrease the rate of diffusion. But how is it possible? Experts plz answer Give reason why this mathematical expression is contradicting practical application?
Monobikash Deb asked a question
Subject: Chemistry, asked on on 20/6/16
at what temperature the r.m.s speed of N2 will be tripled and K.E will be 4 times .
Pianist asked a question
Subject: Chemistry, asked on on 2/9/17

please solve this question step by step.
Ranjitha R asked a question
Subject: Chemistry, asked on on 27/3/18
when we keep water in freezer we notice that there will be some change in container. the change in container will be there will be water droplets on the container. when we agree that liquids take up definte volume then why this phenomenon happens why the droplets of water is seen when we keep water container in freezer
Pianist asked a question
Subject: Chemistry, asked on on 24/9/17
initial volume of hydrogen is 80cm3 at 150mm Hg and 104°F and oxygen whose volume is 90cm3 at 250 mm hg is added to it. Find total pressure of mixture
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