What type of reaction is shown below? CaCO3(s) → Cao(s) + CO2(g)
A. Decomposition
B. Single-displacement
C. Combustion
D. Double-displacement

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

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