The radius of the base of a cylindrical silo is 28 feet. if the distance from point b to the silo is 53 feet, what is the distance from point b to point a, a point of tangency?

a 5.0 l vessel holds 3.0 mol n2, 2.0 mol f2, and 1.0 mol h2 at 273 k. what is the partial pressure of fluorine?

at 298 k, you collect 0.5 l of oxygen over water that has a total pressure of 150 kpa. what is the partial pressure of oxygen? (the partial pressure of water vapor at 298 k is 3.6 kpa.)

a tank of gas has partial pressures of nitrogen and oxygen equal to 1.61 × 104 kpa and 4.34 × 103 kpa, respectively. what is the total pressure of the tank? remember that (1.0 × 105) + (1.0 × 105) = 2.0 × 105.

at a depth of 40 m, the water pressure is 500 kpa. a diver breathing air (78% n2, 21% o2) at this depth would have what partial pressure of oxygen in his lungs?