In the reaction c7h16+blanko2-8h2o+7co2 what coaffecent should be placed in front of o2 to balance the reaction

 11.

Write down total number of Oxygen atoms on the right hand side of the equation. The number of atoms on the right side must be equal to the number of oxygen atoms on left side. See the picture for explanation.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.