Prior to the spill, the mining waste holding pond was intended to temporarily hold water to allow time for particles to settle and the pH to be adjusted. Suppose the pond was used as intended, assuming no flow in or out. Cyanide (a common chemical used to extract gold from ore) is present in the pond at a concentration of 0.5 mg/L. Cyanide has a decay rate of 0.05/hr. What would the cyanide concentration be after 1 day of holding the water in the pond

Which of these conditions most likely produces an unstable isotope?

Stage in which a star’s outer layers have started to cool and grow outward?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.