Octane (C8H18) is found in gasoline. It is burned for fuel in a combustion reaction. The unbalanced combustion reaction for octane is shown below.

C8H18+O2 CO2+H2O+heat

When the reaction is balanced, how many carbon dioxide molecules are produced for every octane molecule burned?

A.1
B.4
C.8
D.2

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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