A radioactive tracer-labeled microorganism (MMM) decomposes to NN as follows:
MMM(s) → NN(s) + 3CO2 (g)
If the CO2 (g) yields 2 × 107 dpm (disintegrations per minute) in a detection device, how many μCi (microcuries) is this? How many cpm (counts per minute) will be noted if the counting device is 80% efficient in counting disintegrations? Data: 1 curie = 3 × 1010 dps (disintegrations per second).
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