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explain the physical significance of van der waals parameter?
on what factors does the surface tension depends?
The size of a weather balloon becomes larger as it goes to higher altitudes. Why?
Why 2nd Electron Gain Enthalpy of oxygen is positive?
by sucking through a straw a student can reduce the pressure in his lungs to 750mm of mercury density=13.6gm/cm3 using the straw he can drink water from a glass upto a maximum depth of
a) 10cm b) 75cm 3) 13.6cm 4)1.36cm
Explain why liquids like ether and acetone are kept in cool places?
Why Heavy water is used as moderators in nuclear reactions? And, can ordinary water act as moderators instead heavy water or not? If yes please or if no how and why?
The drain cleaner, Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen. What volume of dihydrogen at 20C and one bar will be released when 0.15g of aluminium reacts?
DIFFERENCE BETWEEN REAL GAS AND IDEAL GAS (IN POINTS)
150 mL of a gas at NTP were taken to 20o C and 0.96 bar pressure. What is the change in volume of the gas?
What will be the graph between log p and inverse of log v ?
i. Which type of intermolecular forces exist between NaCl and H2O
ii. What will be the pressure of the gaseous mixture when 0.5 L of H2 at 0.8 bar and 2.0 L of O2 at 0.7 bar are introduced in a 1 L vessel at 27C?
A vessel of volume 8.0x10-3 m3 contains an ideal gas at 300K and 200kPa. The gas is allowed to leak till pressure falls to 125kPa the amount of the gas (in moles) leaked assuming tht the temp remains constant is ?????
1.0 litre of N2 and 7/8 litre of O2 at the same temperrature and pressre were mixed together. what is the relation b/w the masses of the two gases in the mixture ????
A mixture of two gases A and B in the mole ratio 2:3 is kept in a 2 litre vessel. A second 3 ltre vessel has the same two gases in the mole ratio 3:5 . both gas mixtures has the same temp and the same total presurre . they r allowed to intermix and the final temp and the total presure are the same as the initial values , the final volume bieng 5 litres . given tht the molar masses are MA and MB the mean molar mass of the final mixture is ????
the vol of the H2gas effuses through a hole in a container in 5 seconds. the time taken fr the effusion of the same volume ofthe specified gas under identical conditions is ?????
prove that PV=1/3 mNc2
What is Andrews Isotherm
Out of CO2 and NH3, which gas is expected to show more deviation from ideal behaviour?
the volume of a gas at 0 degree C and 700mm Pressure is 760 cc. the no. of molecules present in this volume is___?
how many pi bonds & sigma bonds are there in napthalene? reply asap!!
explain why o-hydroxy benzaldehyde is liquid at room temp. while p-hydroxy benzaldehyde is a high melting solid?
boiling of a liquid cannot occur in a closed vessel.comment on the statement
At 27 degrees celsius and 1atm pressure, a gas has volume v. What will be its volume at 177 degrees celsius, at a pressure of 1.5atm?
EQUAL MASSES OF SO2, CH4, 02 ARE MIXED IN EMPTY CONTAINER AT 298 K , TOTAL PRESSURE IS 2.1 ATM . THE PARTIAL PRESSURE OF CH4 IN THE MIXTURE IS ??METHOD????1) 0.5 ATM2) 0.75 ATM3) 1.2 ATM4) 0.6 ATM
Why rain drops are spherical ?
x ml of H2 effuse through a hole in a container in 5 sec.the time taken for the effusionof same volume of the gas specified below under identical condition is
what is STP and NTP???
reply soon :)
a certain gas takes 3 times as long to effuse out as helium.what will be its molecular mass?
(Q.) Calculate the pressure exerted by 1 mol of CO2 at 273 K if the van der Waal’s constant ‘a’= 3.592 dm6atm mol-. Assume that the volume occupied by CO2 molecules is negligible.
We do not see a car moving as a wave on the road. Why?
A gaseous mixture contains oxygen and another unknown gas in the molar ratio 4:1 diffuses through a porous plug in 245 seconds. Under simillar conditions same volume of oxygen takes 220 seconds to diffuse. Find the molecular mass of the unknown gas.
what should be the percentage increase in pressure for 5% decrease in volume?
A quantity of an ideal gas is collected in a graduated tube over the mercury. The volume of gas at 20.C is 50 ml and the level of the mercury is 100mm above the outside of the mercury level. The atmospheric pressure is 750mm. Volume of gas at STP is? (Take R = 0.083 litre atm/mole )
A mixture of hydrogen and oxygen at 1 bar pressure contains 20% by mass of Hydrogen .Calculate the partial pressure of hydrogen .
why gases do not settle down at the bottom of the container when kept in it?
What do you mean by NTP (normal temperature and pressure) and STP (standard temperature and pressure)?
Strongest Base --
Be(OH)2 , Mg(OH)2 , Al(OH)3 , Si(OH)4
Can u explain me Liquefaction of Gases?
the weight of 1 mole of agas of density 0.1784g/L at NTP is ___?
why do gases show deviation from ideal behaviour?
at certain mixture of helium and argon weighing 5g occupies a volume of 10 l at 25 degreec and 1 atm pressur. wha t is the composition of the mixture in mass pecentage ?
how to make a project on adulteration of food in chemistry ... what should be the contents of it?
Why are vegetables cooked with difficulty at a hill station?
a balloon filled with an ideal gas is taken from the surface of the sea deep to a depth of 100m , what will be its volume in terms of its original volume?
calculate the molecular diamter of He from its van der waal's constant b=24?? proper explanation reqd.!
what is the unit of the constants in van der waal's equation?
plzzzzzzzzz answer as soon as possible
what property of molecule of real gases is indicated by vanderwall's constant 'a'
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