Astronomers think that the Earth likely formed at the same time as all of the other rocky materials in our solar system, including the oldest
meteorites. The oldest meteorites ever found on Earth contain nearly equal
amounts of both Uranium-238 (U-238) and Lead-206 (Pb-206). The half-life
of the U-238/Pb-206 decay pair is 4.5 billion years. According to this
absolute age-dating method, what is Earth's age? (Don't forget units!) *

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

Which of the following words describe the reality that the universe looks the same from various perspective

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction