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1. In determining the half-life of barium-137m, it was not necessary to subtract out the background....

1. In determining the half-life of barium-137m, it was not necessary to subtract out the background. Why not?

2. You used a strontium-90 source in Part C of this experiment. Write the balanced equation showing this beta decay.

3. In many instances in these experiments, you might have tried to make identical measurements but obtained different values of the Activity. How can that be? Hint: It’s probably not operator error.

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i atorn due to which its hall_0.de Bagiura--127-ro in a very short-lived is also very grad.. so, the background dog, ist offe

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