Answer:
5 mg
Explanation:
If one half life is 4 hours, then 3 half lives is 12 hours.
This means that the sample will decay to 1/8 of its original amount.
So, the answer is 40(1/8) = 5 mg.
Answer:
filtration is the process of using a filter to remove solids from liquids or gasses.
Example:
an example of this is tea.
The answer is a. plenty of water
Answer:
The photoelectric effect
Explanation: hope it helps
Answer:
uh i think its D All of the above
Explanation:
sorry if its wrong