posted by Beth .
Determine the activity of 1.11 g of 88Ra226 (a) in disintegrations per second (Bq) (b) and in Curies (Ci). The half-life is 1600 yr (1 yr = 3.156 x 10^7 s). 1 Ci is equal to 3.7 x 10^10 Bq.
k = 0.693/t1/2
Solve for k.
# atoms = No = (1.11/88)*6.02E23) = ?No. Then
Ro = kNo = ? disintegrations per year. Convert to dps and Ci.