The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

C3 natural logs and half-life

please help with question 11, absolutely stuck. How do I find the constant k and then therefore answer the actual question? All help appreciated!

UPHOTO_20180721_232715-compressed.jpg.jpeg
Original post by Danielnovels25
please help with question 11, absolutely stuck. How do I find the constant k and then therefore answer the actual question? All help appreciated!


You are told that it has a half-life of 29 years. This means that after 29 years, the isotope is HALF of its initial mass.

Here we denote the initial mass as m0m_0, and so at t=29t=29 we have m=12m0m = \frac{1}{2}m_0.

Use this to work out what kk is.
Original post by RDKGames
You are told that it has a half-life of 29 years. This means that after 29 years, the isotope is HALF of its initial mass.

Here we denote the initial mass as m0m_0, and so at t=29t=29 we have m=12m0m = \frac{1}{2}m_0.

Use this to work out what kk is.


ah yes... read the 29 as mass, not time. Thank you😊

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you