15.27


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Rohan Chaudhari- 1K
Posts: 32
Joined: Fri Sep 29, 2017 7:06 am

15.27

Postby Rohan Chaudhari- 1K » Sat Mar 03, 2018 4:43 pm

How do you calculate the time it takes for something to get to 15% of its initial concetration and 1/9th of its initial condition if you are given only its half life?

Luke Bricca 1H
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

Re: 15.27

Postby Luke Bricca 1H » Sat Mar 03, 2018 5:27 pm

You can assume that the initial concentration equals 1 and the final concentration you're looking for equals 0.15 when solving the half-life equation for time.

Andres Reynoso 1J
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

Re: 15.27

Postby Andres Reynoso 1J » Sat Mar 03, 2018 5:33 pm

Using the given half-life, we can use the formula to calculate the k value. From there, we can use the formula to calculate time. [A]t is the concentration remaining after time t.


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