Number of moles = Mass/Formula Mass
Fm = 48(Four Carbons) + 152(8 Flourines)
Fm = 200
Number of Moles = 256/200
The number of moles in C4F8 is 1.28
Hope this helps :) ~
Hey there!
A half-life means after a certain amount of time, half of that substance will gave decayed after that time.
So, we divide the 120 atom sample in half 3 times.
120 ÷ 2 = 60
60 ÷ 2 = 30
30 ÷ 2 = 15
There will be 15 atoms of the radioactive sample remaining after three half lives.
Hope this helps!
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It is the most common value in the set.</span>
Answer: the correct answer is D) None of the individual insects should have possessed genomes that made them resistant to DDT.
Explanation: the problem is that DDT has become ineffective because insects have become more resistant to DDT.
Answer:
in the gas giants like jupiter