Can someone help me with the last 3 questions and make sure
the rest are correct?...
Name Instructor: Date Section/Group: Laboratory 15 Data: Radioactivity of Potassium-40 60 sec Trial Holder only 0.42 0.50 0.50 With Sample 3.42 2183 2.50 2.58 2.3 Calculations Mean counts per second from the holder (folder anby): O.TO + 0,25 +0,42 +0.50 +0,50 0,484 0,484 60 sec -0.00806 or 0.0081 Mean counts per second from the holder and sample (Bahrple): 3.42 + 50+ 2.53 2.83 2.332 2,832 0.0472 60sec Decays per second actually coming from the sample (...): (3,42 -0,75) + (2183 -0,25) + (2.50-0.42) + (2.58 -0.50) + C2, 83-0130) 5 = 2.348 21348 = 0.0391 Number of radioactive potassium-40 nuclei in your sample (N): Laboratory 15 | Radioactivity of Potassium - 40 181