Question

The amount of a radioactive substance remaining after t years is given by the function , where m is the initial mass and h is the half-life in years. iron has a half-life of 2.7 years. which equation gives the mass of a 200 mg iron sample remaining after t years, and approximately how many milligrams remain after 12 years? ; 2.6 mg f(t)=2.7(0.5)t; 0.0007 mg f(t)=200(0.5)t; 0.05 mg ; 9.2 mg

Answer 1

The equation that gives the amount of Fe that remains after 12 years is; F(t) =200(0.5)^12/2.7.

What is a radioactive substance?

A radioactive substance is a substance that decays spontaneously. Recall that the half life is the time taken for half of the radioactive substance to remain.

We know that; N =No(0.5)^t/t1/2 hence, the equation that gives the amount of Fe that remains after 12 years is; F(t) =200(0.5)^12/2.7.

Learn more about radioactive isotope: https://brainly.com/question/1907960

#SPJ2

Answer 2

Answer:

A

Step-by-step explanation:

took the test