In 1978, a 200-gram sample of cobalt-60 was buried in the yucca mountains, just northwest of las vegas, nevada. how much of this sample was present in 2004? the half-life of cobalt-60 is 5.23 years.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Consider this initial-rate data at a certain temperature for the reaction described by

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above