Depends on how deep you're willing to go to really,
You need one of a few arrangements of flip flop circuits to keep 1-bit state.
Going deeper, you need either NAND, or NOR gates(or a bunch of other ones) and connectors.
Even deeper, you'll require diodes or transistors to build the logic gates.
Beyond that is particle physics.
It is - not stereospecific
, a reaction in which the stereochemistry of the reactants controls the outcome of the reaction; - bimolecular at rate-determining step
, it involves two molecules; - first order, - rates is governed by the stability of the carbocation that is formed.
you can install a 64 bit operating system on a 32 bit machine.
hope this helps!