In the equation,
2Al(s) + 3Cl2(g) —> 2AlCl3(s),
the large number "3" in front of Cl2 indicates the the number of moles of Chlorine molecules needed to balance the equation.
Hope this will help you.
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Answer: I believe it is artificial selection (not certain though)
Explanation: modern day dogs have been bread an domesticated to be used by humans in ways we see fit.
The answer should be <span>C. nuclear reaction.</span>
Convert grams —> mols and then mols —> atoms
We know that there are 6.02 x 10^23 atoms/mol
And we know that there are about 160 grams of fe2o3 per mol
So (79g fe2o3)/(160 g/mol) = .49 mol fe2o3
Now we use avogadro’s number to do
(.49 mol fe2o3)/(6.02 x 10^23 atoms/mol) = the answer.
I’ll leave the easy math to you.
For a chain reaction to occur each fission must produce at least one more fission reactions.
Nuclear chain reactions are series of nuclear fission, which involves splitting of atomic nuclei, each initiated by a neutron produced in a preceding fission. Each fission produces 2 to 3 neutrons. At least one of these neutrons on average has to hit another nucleus and initiate another fission, and thus the number of fission increase with time.
