The presence of the radioactive gas radon (rn) in well wa- ter presents a possible health hazard in parts of the united states. (a) assuming that the solubility of radon in water with 1 atm pressure of the gas over the water at 30 °c is 7.27 * 10-3 m, what is the henry’s law constant for radon a sample consisting of various gases contains 3.5 * 10-6 mole fraction of radon. this gas at a total pressure of 32 atm is shaken with water at 30 °c. calculate the molar concentration of radon in the water.

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Explain why you think this diagram shows what happened to the carbon in the biodome.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.