the correct answer is choice D
Answer: B
Explanation: sorry if I'm too late but i just did this question and that was the right answer
<span> In this question (t½) of C-14 is 5730 years, which means that after 5730 years half of the sample would have decayed and half would be left as it is. After 5730 years ( first half life) 70 /2 = 35 mg decays and 35 g remains left. After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and ...</span>Missing: <span>25g</span>
16 and 6
Explanation:
the top number will be 16 and the bottom number will be 6
It's an element
good luck