Register
Potassium-40 (K-40) decays into argon-40 (Ar-40). After 1.25 billion years, 20 grams of K-40 would be reduced to 10 grams. How much of the original K-40 would remain after 5 billion years? A. 0 grams B.
29.0k views
4 votes
Potassium-40 (K-40) decays into argon-40 (Ar-40). After 1.25 billion years, 20 grams of K-40 would be reduced to 10 grams. How much of the original K-40 would remain after 5 billion years?

A. 0 grams
B. 1.25 grams
C. 2.5 grams
D. 5 grams

User NSSplendid
by
8.2k points

2 Answers

1 vote

the answer is B. 1.25 grams

User Alex North
by
7.9k points
5 votes

B. 1.25 grams :))))))))))))

User Avalanche
by
8.4k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

Passe para a voz passiva: - Kevin asked Dennis a question -Somebody Build the house last year -She gives him a box
Who is the author of Alice's Adventures in Wonderland'??
why is mercury usually hard to see without a telescope?
If you are writing a persuasive essay in favor of banning vending machines in schools, which is a counterargument you might anticipate?
Which sentence has a misplaced adjective phrase? A. A clown at the fair with pink hair gave me a balloon. B. Marjorie is my cousin from Florida. C. My sister is the girl in the basketball jersey. D. That
Link Copied!