Is the following chemical reaction BALANCED or UNBALANCED? 2Cu + O2 ---> 2Cuo
O Balanced
Unbalanced

Density and pressure

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The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

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