Answer:
-1160kj/mol
Explanation:
the reaction is exothermic because heat is released to the environment
The first option, collapsed in on itself.
The star's core mass becomes so dense that the resulting gravity implodes the star.
Interesting enough, the third option is kindof true too...some large and tenacious black holes that absorb other stars will form incredibly bright accretion disks around their perimeter before filling absorbing the star.
Here's an example of a bar graph.
Iron and steel are magnetic in nature. So you can use a magnet to separate them
