Your lab has been given a radioactive sample and you determine that the decay constant is 3.00 x 10-6 s-1 and that the activity at that time is 56.0 µCi. You are then asked to determine the number of nuclei that will decay in the time interval between 5.00 and 7.00 hours after you received the sample.

Your lab has been given a radioactive sample and you determine that the decay constant is 3.00 x 10-6 s-1 and that the activity at that time is 56.0 µCi. You are then asked to determine the number of nuclei that will decay in the time interval between 5.00 and 7.00 hours after you received the sample.