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1. The decay series shown below proceeds through a series of alpha and beta decays.  How many...

1. The decay series shown below proceeds through a series of alpha and beta decays.  How many of each occur in the process?

238/92U --> 206/82Pb

8 alpha particles and 4 beta particles

4 alpha particles and 4 beta particles

8 alpha particles and 6 beta particles

6 alpha particles and 8 beta particles

2.

Determine the pH of a 0.05 M HCN solution (Ka = 6.2x10-10).  

8.75

5.25

1.30

7
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