23. You have 100 grams of radioactive C=14 The half life of C=14 is 5730 years. How many grams are left after 1 half life? 100 grams 2 grams 25 grams 50 grams

The half-life of a radioactive substance is the time it takes for half of the substance to decay. In this case, the half-life of Carbon-14 (C=14) is given as 5730 years. This means that after 5730 years, half of the original amount of Carbon-14 will have decayed. Given that we start with 100 grams of Carbon-14, after one half-life (5730 years), half of this amount will have decayed. Therefore, we will be left with half of the original 100 grams. To calculate this, we simply divide the original amount by 2. So, after one half-life, we will be left with 50 grams of Carbon-14.