The cylinder in the drawing contains 3.00 mol of an ideal gas. by moving the piston, the volume of the gas is reduced to one-fourth its initial value, while the temperature is held constant. how many moles δn of the gas must be allowed to escape through the valve, so that the pressure of the gas does not change?

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?