A radioactive sample has a half life of 1500 years. A sealed tube containing 1g of the sample will contain after 3000years.

(A) 1 g of the sample

(B) 0.5 g of the sample

(C) 0.25 g of the sample

(D) 0.00 g of the sample

Question

Chemistry

Ace Foley

8 August, 19:25

A radioactive sample has a half life of 1500 years. A sealed tube containing 1g of the sample will contain after 3000years.

(A) 1 g of the sample

(B) 0.5 g of the sample

(C) 0.25 g of the sample

(D) 0.00 g of the sample

+3

Answers (2)

Know the Answer?

Andreas Bailey · Answer 1

A half life means how long it takes to get to half of the material. So after one half-life, the sample will have 1/2 grams of sample, and after 2 half-lives there will be 1/4 of the sample, or 0.25g.

Darrell Hanna · Answer 2

The answer is c. 0.25 because it starts at 1, then after 1500 years it's a. 5 and then at another 1500 it's. 25. It's called a half life because it'll be in half after the time period ends.

A radioactive sample has a half life of 1500 years. A sealed tube containing 1g of the sample will contain after 3000years.(A) 1 g of the sample(B) 0.5 g of the sample(C) 0.25 g of the sample(D) 0.00 g of the sample

A radioactive sample has a half life of 1500 years. A sealed tube containing 1g of the sample will contain after 3000years.

(A) 1 g of the sample

(B) 0.5 g of the sample

(C) 0.25 g of the sample

(D) 0.00 g of the sample