Question

A 14 gram sample of a substance that's

used to preserve fruit and vegetables has
a k-value of 0.1095.
-kt
N = Noe
No = initial mass (at time t = 0)
N = mass at time t
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t = time, in days

Find half-life in days. Round to nearest tenth

Answer 1

The half-life in days is 6.3 days

Explanation:

Here, we want to get the half-life

From what we have in the question, we can see that we have a first order decay relation

For a first order decay relation;

t1/2 = ln 2/k

That will be;

t1/2 = ln2/0.1095

t1/2 = 6.33

To the nearest tenth, this is 6.3 days