If we choose to record measurements every 11 days, then the table is easy to produce:
<span>
<span>
<span>
Days
Mass
</span>
<span>
0
32
</span>
<span>
11
16
</span>
<span>
22
8
</span>
<span>
33
4
</span>
<span>
44
2
</span>
<span>
55
1
</span>
</span>
</span>
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
<span>
<span>
<span>
30.045789</span></span></span> grams
We can make a table for every ten days:
<span>
<span>
<span>
Days Mass
0
32.00
</span>
<span>
10
17.04
</span>
<span>
20
9.07
</span>
<span>
30
4.83
</span>
<span>
40
2.57
</span>
<span>
50
1.37
</span>
<span>
60
0.73
</span>
</span>
</span>
The sequence of the first column is an arithmetic sequence.
The second column is an exponential decay sequence.