In the presence of excess thiocyanate ion, scn−, the following reaction is first order in iron(iii) ion, fe3+; the rate constant is 1.27/s what is the half-life in seconds? how many seconds would be required for the initial concentration of fe3+ to decrease to each of the following values: 25.0% left, 12.5% left, 6.25% left, 3.125% left? what is the relationship between these times and the half-life?

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.