The half-life of a substance is 15..
At time = 0, this substance has size 45. Calculate the size of the substance at time = 29.
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The half-life of a substance is 15.
At time = 0, this substance has size 45
Calculate the size of the substance at time = 29.
Step 1: Calculate Time Difference (Δ)
Δ = tn - t
Δ = 29. - 0
Δ = 29
Step 2: Calculate number of half-lives (hn)
hn =
Δ
h
hn =
29
15.
hn = 1.9333333333333 <-- Number of times we will reduce our original size by ½
Step 3: Calculate New Substance Size (xn)
We go through each time starting at t = 0 all the way to hn = 1.9333333333333
Substance size at time = 1
x1 = ½(x0)
x1 = ½(45)
x1 = 22.5
Shortcut Solution to Above
xn = ½hnx0
xn = ½1.9333333333333(45)
xn =
45
3.8193664156417
xn = 11.782058881732
You have 2 free calculationss remaining
What is the Answer?
xn = 11.782058881732
How does the Half-Life of a Substance Calculator work?
Free Half-Life of a Substance Calculator - Given a half-life (h) of a substance at time t, this determines the new substance size at time tn, otherwise known as decay. This calculator has 4 inputs.
What 4 formulas are used for the Half-Life of a Substance Calculator?
Δ = tn - t Number of half lives = Δ/half life Half Life Remaining = 1/2 * Prior Amount