menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Register
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
The half-life of 3H (H-3) is 12 years. About how long does it take for 127/128 of a sample of that radionuclide to decay? (Hint: this means only 1/128 are left) A: 7 years B:11.9 years C:84 years D:12.
asked
May 11, 2022
227k
views
5
votes
The half-life of 3H (H-3) is 12 years. About how long does it take for 127/128 of a sample of that radionuclide to decay? (Hint: this means only 1/128 are left)
A: 7 years
B:11.9 years
C:84 years
D:12.1 years
Chemistry
high-school
Md Samiul Alim Sakib
asked
by
Md Samiul Alim Sakib
4.7k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
2
Answers
1
vote
Answer:
i do believe its 7
Step-by-step explanation:
Jenner La Fave
answered
May 13, 2022
by
Jenner La Fave
4.1k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
2
votes
Answer:84
Step-by-step explanation:
Nitin
answered
May 17, 2022
by
Nitin
4.0k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
4.5m
questions
5.9m
answers
Other Questions
Which of the following aqueous solutions are good buffer systems? . 0.29 M perchloric acid + 0.15 M potassium perchlorate 0.16 M potassium acetate + 0.26 M acetic acid 0.18 M hydrofluoric acid + 0.12 M
Suppose a flask is filled with of , of and of . The following reaction becomes possible: The equilibrium constant for this reaction is at the temperature of the flask. Calculate the equilibrium molarity
1. If temperature is increased, the number of collisions per second do what
A helium balloon containing 0.100 mol of gas occupies a volume of 2.4 L at 25 C and 1.0 atm. how many moles have we added if we inflate it to 5.6 L?
What color flame did lead nitrate produce? yellow-red blue green purple
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org