please can you help within five minutes

Chemistry
Tutor: None Selected Time limit: 1 Day

The amount of 14C in an old, isolated sample of vegetation is 0.809 that expected from a present day sample with an equivalent carbon content. Calculate the age of the old sample in years.

Jan 1st, 2015

k = (ln2) / t(1/2) 

You calculate k in reciprocal years 

Then you use [A] / [A]o = exp(-kt) with t = 8740 

The fraction on the left is the fraction asked for in the first question. 

for the next one, 0.809 = exp(-kt) and you solve this time for t. take the log of both sides 

ln(0.666) = -kt 


N=Ao*(1/2)^t/T

choose me best and get free answers thanks

Jan 1st, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Jan 1st, 2015
...
Jan 1st, 2015
Feb 22nd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer