If 12 g of a radioactive substance are present initially and

Last updated: 7/25/2022

If 12 g of a radioactive substance are present initially and 9 yr later only 6 g remain, how much of the substance will be present after 11 yr? After 11 yr there will be g of a radioactive substance. (Round the final answer to three decimal places as needed. Round all intermediate values to seven decimal places as needed.)