Friday
April 18, 2014

Homework Help: Chemistry

Posted by Jay on Friday, May 6, 2011 at 11:20am.

How much time in years (assume a 365 day yr) would it take for a 1.6678g sample of 239Np to decay to a mass of 0.8671g if it has a half life of 2.030*10^5s

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

College Chemistry - How much time in years (assume a 365 day yr) would it take ...
CHEMISTRY - Suppose you had a detection device that could count every decay ...
chemistry - How long will it take for 25% of the C-14 atoms in a sample of C-14 ...
MATH! - The mass of a radioactive substance follows an exponential decay model, ...
calculus - The rate at which an amount of a radioactive substance decays is ...
Chemistry - How many years will it take for 88g tritium to decay to an 11g ...
UIW - Neptunium-239 has a half-life of 2.35 days. How many days must elapse for ...
Calc - A sample of a radioactive substance decayed to 93.5% of its original ...
chemistry - A sample of water is analyzed and found to contain 18.6 ppb of ...
math - if someone gave me a dollar every hour, how much money would i have in a ...

Search
Members