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1. Ethanol boils at 78.4°C and the enthalpy of vaporization of ethanol is 42.4 kJ mol-1. Calculate the entropy of vaporization of ethanol.
2. Calculate the entropy change for the conversion of following :
(a) 1 g ice to water at 273 K, AHf for ice = 6.025 kJ mol-1.
(b) 36 g water to vapour at 373 K; AHy for H20 = 40.63 kJ mol-1.
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.60 cm into the river
The differential gear of an automobile axle allows the wheel on the left side of an automobile to rotate at a different angular speed than the wheel on the right side. Find the difference between the angular speeds of the wheels
Canadian geese migrate essentially along a north-south direction for well over a thousand kilometers in some cases, Obtain how long will it take the bird to cover a ground distance of 450 kilometer from north to south
q1. a diffraction grating with exactly 1000 lines per centimeter is illuminated by a he-ne laser of wavelength 683
An airplane pilot wishes to fly to his destination 500 mi due west, but the wind is blowing at 35.3 mi/hr toward 10.7° north of west. what will be the speed of the plane relative to the ground
A lady pushes down on a 35.0 kg crate (constrained to move along a horizontal floor) at an angle of 47.3 degrees to the horizontal with a force of 125N along a frictionless surface. what is the normal force of the surface on the crate
The Olympic Flame at the 1992 Barcelona Olympics was lit by a flaming arrow shot from a point 60 meter horizontally and 24 meter vertically from the flame. Determine the initial speed necessary for the arrow
A circuit that consists of a capacitor in series with a 50 ohm resistor draws 4 A from a 250-V(rms), 200 Hz power source. how much power would the circuit dissipate
neglect air resistance for the following. a soccer ball is kicked from the ground into the air. when the ball is at a
A supersonic jet flying at 145 m/s is accelerated uniformly atthe rate of 23.1 m/s2 for 20.0 s. How many times thespeed of sound is the planes final speed
A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell?
An unstable atomic nucleus of mass 17 x10-27 kg initially at rest disintegrates into threeparticles. evaluate the velocity of the third particle
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