Iodine-131 is a beta emitter used as a tracer in radio immunoassays biological systems. It follows first order kinetics. The half-life if iodine-131 is 8.04 dates. If you start with 8.0 grams of iodine-131, how many grams would remain at 39 days?

0.2774 grams of iodine-131 would remain at 39 days.

Explanation:

Initial concentration of iodine-131 =

Final concentration of iodine-131 after time t = [A] = ?

Duration of time = t = 39 days

Half life of the iodine-131 =

Rate constant =

For the first order kinetics :

[A] = 0.2774 g

0.2774 grams of iodine-131 would remain at 39 days.

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cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.