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Stars of same mass and volume do.

Gravitational attraction eventually causes enough pressure to fuse small nuclei to

form larger ones. More pressure is required to fuse relatively large nuclei. Pressure can only be provided by gravity and therefore massive stars can burn large nuclei.

Burning is only energetically favourable up to production of iron-56 (or cobalt, depending on which book you read).

Small stars may only contain elements up to oxygen. Large ones may contain some iron, but would probably used all of the hydrogen and helium.

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14y ago

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