Radioactive decay The half-life of a certain radioactive substance is 12 hours. There are 8 grams present initially.

a. Express the amount of substance remaining as a function of time t.

b. When will there be 1 gram remaining?

Step 1 of 4</p>

In this problem we have to find the amount of substance remaining and also find the when will be 1 gram remaining.

Given that

Half life of radioactive substance is 12 hours.

And also give 8 grams present initially.

Step 2 of 4</p>

We know that the number of radioactive substance (y) present at any later time t will be

Given in the problem and .

First find the value of

.’.