Question

what si chemistry.
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Answer 1

Answer:

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Step-by-step explanation:

Volga River

Volga River, Russian Volga, ancient (Greek) Ra or (Tatar) Itil or Etil, river of Europe, the continent's longest, and the principal waterway of western Russia and the historic cradle of the Russian

Answer 2

Answer:

Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.