Answer:
:)
Explanation:
The nucleus in biology is usually referring to that of
living cells found in organisms in which contains DNA whereas the nucleus in chemistry is usually referring to that of atoms in which contains subatomic particles such as the proton and neutron.
Nh4cl (the oxidation number of N=-3) so it would be the right answer
Asphalt<span>/bitumen is </span>used to make<span> Japan black, a lacquer known especially for its use on iron and steel,</span>
The 2 in front of 
in 
is <u>Coefficient.</u>
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The 
after 
in the same equation is <u>sub </u><u>script</u><u>.</u>
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There are two atoms of in 
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