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explain the physical significance of van der waals parameter?
on what factors does the surface tension depends?
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?
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)
What will be the graph between log p and inverse of log v ?
what is P-V isotherm?
prove that PV=1/3 mNc2
Prove that the excluded volume 'h' is four times the actual volume of the gas molecules.
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 ?
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!!
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.
boiling of a liquid cannot occur in a closed vessel.comment on the statement
Strongest Base --
Be(OH)2 , Mg(OH)2 , Al(OH)3 , Si(OH)4
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
a cylinder containing N2 gas at one atmospheric pressure is connected to another evacuated cylinder of 0.5 litre capacity through a stop cock. on opening the stop cock , the pressure of the gas in the two cylinders becomes constant at 570 mm at the same temperature . calculate the volume of the cylinder containing N2.
Why rain drops are spherical ?
explain why o-hydroxy benzaldehyde is liquid at room temp. while p-hydroxy benzaldehyde is a high melting solid?
0.6 g of a gas at 150C and 745 mmHg occupies 200 cm3 .It occupies 182.6 cm3 in dry state at N.T.P. Calculate the aqueous tension at 150 C.
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
(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.
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?
explain variation in PV with P for four gases.
what should be the percentage increase in pressure for 5% decrease in volume?
A mixture of ammonia and hydrogen chloride does not obey dalton's law of partial pressure.Why?
why gases do not settle down at the bottom of the container when kept in it?
A mixture of hydrogen and oxygen at 1 bar pressure contains 20% by mass of Hydrogen .Calculate the partial pressure of hydrogen .
What do you mean by NTP (normal temperature and pressure) and STP (standard temperature and pressure)?
Can u explain me Liquefaction of Gases?
the weight of 1 mole of agas of density 0.1784g/L at NTP is ___?
when salt or sugar are poured into different kinds of vessels why do they take the shape of the vessel?
why do gases show deviation from ideal behaviour?
The pressure exerted by a gas in sealed container is 100kPa at 17oC. It was found that the container might leak if the internal pressure exceeds 120kPa. Assuming constant volume, at what temperature in oC will the container start to leak?
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?
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?
how to make a project on adulteration of food in chemistry ... what should be the contents of it?
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?
Critical teperature for CO2 and CH4 are 31.1C and -81.9C respectively . Which of these has a stronger intermolecular force and why ??
Help me please
Why are vegetables cooked with difficulty at a hill station?
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 )
what is rotating polar molecule?
how do we do hybridisation for hcooh
what is the unit of the constants in van der waal's equation?
plzzzzzzzzz answer as soon as possible
Calculate the pressure of 1x10 to the power 22 molecules of oxygen gas when enclosed in a vessel of 5L capacity at temp of 27 degree Celcius.
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