The rate constant is 0.058/days and the population after 18 days is 412.38.
<h3>What is rate constant?</h3>
The rate constant of the population is calculated as follows;
N = N₀(2)^(rt)
where;
- r is the rate constant
- t of double of the population
when the population doubles, t = 12 days
2N₀ = N₀(2)^(12r)
2 = (2)^(12r)
ln(2) = 12r
r = ln(2)/12
r = 0.058/days
<h3>Population size after 18 days</h3>
The population size after 18 days is calculated as follows;
N = 200(2)^(0.058 x 18)
N = 412.38
Thus, the rate constant is 0.058/days and the population after 18 days is 412.38.
Learn more about rate constant here: brainly.com/question/11272059
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