Answer:
from the pic:

since molar mass is 118.084 g/mol;


It is an aldehyde with structure ( second pic )
when she reaches for the cup that is somatic nervous system. when she begins to cough
It wont melt like gold and copper would at that temperature
Answer:
<em><u>spontaneous composition</u></em> is the ingnition
of the substance due to the repid oxidation of its on material.
There is no requirement of heat of external sources.
<em><u>Rapid composition</u></em> on the other hand release large amount of heat and light energy.
Explosion and the firecracker is the best example of Rapid composition.
Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is C. boron and carbon.