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Answer:
1. The combined number of protons and neutrons remains constant.
2. There are two atoms with mass numbers of 2.
3. It is the number of protons plus neutrons.
4. A nucleus with a greater mass than any of the reactants will be produced.
5. Fusion reactions in the sun convert small amounts of matter into large amounts of energy.
Explanation: I couldn't see the comments so I guess some ppl can't either but here you go got them all correct! :)
Th sun produces energy through fusion reaction by converting small amount of matter into larger amounts of energy.
The sun is able to produce energy because protons of hydrogen atoms present in the sun collide violently in the sun's core and fuse together leading to the formation helium atom.
This process of fussion is referred to as a PP (proton-proton) chain reaction, and it emits an enormous amount of energy
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