PLEASE HELP CHEMITRY! What happens to the binding energy of lighter elements when they undergo fusion?

What is the most stable nucleus (the one with the highest binding energy)?

What happens to the binding energy of elements like uranium when they undergo fission?

Why does the fusion of elements beyond iron in our universe require a supernova? Use this diagram to explain your answer.

1) In fusion reactions, two light atomic nuclei fuse together to form a heavier nucleus. In doing so, they release a comparatively large amount of energy that arises from the binding energy, creating an increase in temperature of the reactants.

2) iron-56

3) When a large, fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission.  However, one neutron does collide with an atom of uranium-235, which then splits and releases two neutrons and more binding energy.

4) Iron cannot release energy by fusion because it requires a larger input of energy than it releases.  This energy blows the outer layers of the star off into space in a giant explosion called a supernova (plural: supernovae.)

have you tried   G o o g l e

the answers would be

the first one and the second one

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol