Suppose a person ingests equal amounts of two nuclides, both of which are beta emitters (of roughly equal energy). nuclide a has a half-life of 8.5 hours and nuclide b has a half-life of 15.0 hours. both nuclides are eliminated from the body within 24 hours of ingestion. which of the two nuclides produces the greater radiation dose?

Steam reforming of methane ( ch4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. an industrial chemist studying this reaction fills a 1.5 l flask with 3.5 atm of methane gas and 1.3 atm of water vapor at 43.0°c. he then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of carbon monoxide gas to be 1 .0 atm. calculate the pressure equilibrium constant for the steam reforming of methane at the final temperature of the mixture. round your answer to 2 significant digits.