15.1g per day of a certain industrial waste chemical P arrives at a treatment plant settling pond with a volume of 10,000m3. P is destroyed by sunlight, and once in the pond it has a half-life of 23.h. Calculate the equilibrium concentration of P in the pond. Round your answer to 2 significant digits.

The form of energy that can move from place to place across the universe is (answer) on earth, the main source of this energy is (2nd answer) first blank; a) gravitational potential energy b) radiant energy c)thermal energy d) vibrational energy second blank; a)lightning b) the moon c) the sun d) the wind