Gases & Solutions
States of Matter
If Fc and Fa denote cohesive and adhesive force on a liquid molecule near the surface of a solid. then the surface of request is concave , when;
A high-altitude balloon is filled with 1.41×104L of hydrogen at a temperature of 21∘C and a pressure of 745 torr. What is the volume of the balloon at a height of 20 km, where the temperature is −48∘C and the pressure is 63.1 torr?
Two inflated ballons I and II (thin skin) having volume 600 mL and 1500 mL at 300 K are taken as shown in diagram. If maximum volume of inner and outer balloons are 800 mL and 1800 mL respectively then find the balloon which will burst first on gradual heating.
A box of 1 L capacity is divided into two equal compartments by a thin partition which are filled with 2g H2 and 16 gCH4 respectively. The pressure in each compartment is reorded as P atm. The total pressure when partition is removed will be:
Air entering the lungs ends up in tiny sacs called alveoli.From the alveoli, the oxygen diffuses into the blood. The average radius of the alveoli is 0.0050 cm and the air inside contains 14 per cent oxygen. Assuming that the pressure in the alveoli is 1.0 atm and the temperature is 37∘C, calculate the number of oxygen molecules in one of the alveoli.
At 27∘C a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-tenth of the original value at the same temperature ?
A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston one part contains 5 moles of He(g) and other part 2 moles of H2(g) and 4 moles of O2(g) added at the same temperature and pressure in which reaction takes place finally vessel cooled to 300 K and 1 atm. What is the length of He compartment?
(Assume volume of piston and vol. of H2O(l) formed are negligible)