A sample of rock is found to contain 100 grams of a parent isotope. How many grams of the parent isotope will remain after two h alf-lives?
2 answers:
The answer is 50. I really hope this helps.
Answer:
25 grams
Explanation:
If you see only
100 and 25 then it's 25
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Well, we can rule out diffusion and osmosis because these are passive processes, so we're left with A and C. I'd say A, because the energy is used in muscle contraction.
I believe the answer is B
Answer: a worm ahaha thanks for the points dummy
Explanation:
1 . Nebula
2 . Protostar
3 . Low-mass star
4 . High-mass star
5 . Red Giant Stars
6 . White Dwarf Stage
7 . Black Dwarf Stage
8 . Supernova
9 . Neutron Star
10 . Black hole
Hope this helps.
