Answer:
Explanation:
Answer
It tells you what method she used and what she wanted to accomplish. She is using
<em>an absolute dating method to study a sample of basalt</em>
So the answer you should post is F. F and the quotation above say the same thing.
PH is a simplified observation of the acidity of a solution, defined as the -log [H+] (negative logarithm of the hydrogen concentration).
-log[10^-4] = 4
The pH of this solution is 4.
CU is the element symbol for Copper.
The name "flint" is often the preferred name used for material with a very fine grain size and a slightly higher luster. These "fine-grained" materials break with greater predictability and produce a sharper edge. So the middle answer
One half-life: 5 grams
Two half-lives: 2.5 grams
