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PLZ HELP and best will get brainliest

PLZ HELP And Best Will Get Brainliest class=
PLZ HELP And Best Will Get Brainliest class=

Sagot :

Explanation:

do number one like that and do number two different

that is systems with essentially only two energy levels are

important kind of systems, as at low enough temperatures, only the two

lowest energy levels will be involved.

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