Answer:
28.295244 MeV
Explanation:
= Mass of proton = 1.007276 u
= Mass of neutron = 1.008665 u
= Mass of electron = 0.000549 u
Mass of reactant is 4.002604 u
Mass of the products is

(2 because there are 2 of each)
The difference in mass is

So, the work done in MeV would be

The work done required to completely disassemble all the helium is 28.295244 MeV
Hello,
The answer is A) a mixture. An element as defined as a pure substance, that cannot be broken down and most are typically naturally occurring. A compound occurs in chemical bonding. A substance is either a pure element or compound.
It is B, Microcephaly. Hope I helped! :))