Which statement best evaluates this structure?

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Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

What term describes technology that operates on an atomic level