If we choose to record measurements every 11 days, then the table is easy to produce:
Days
Mass
0
32
11
16
22
8
33
4
44
2
55
1
To calculate remaining mass when days are NOT a multiple of 11, then we use the bottom formula in the attached graphic:
Ending Amount = Beginning Amount / 2 ^ (elapsed time / half-life)
So let's say after 1 day the remaining amount is
Ending Amount = 32 / 2^(1/11) which equals
30.045789 grams
We can make a table for every ten days:
Days Mass
0
32.00
10
17.04
20
9.07
30
4.83
40
2.57
50
1.37
60
0.73
The sequence of the first column is an arithmetic sequence.
The second column is an exponential decay sequence.
