How can you calculate the instantaneous rate of a reaction from a graph of concentrations over time?

By calculating the negative of the slope of the curve of concentration of a reactant versus time at time t.
by calculating the slope of the curve of concentration of a product versus time at time t.

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.

The density would be 1.622