Which tool could be used to measure the mass of a package being mailed?

a. balance

A balance is used to measure the mass of a package being mailed. The weight of an object being mailed is measure by balancing the force cause by the gravity against the force on a spring. This balance is called a spring balance. A balance beam could also be used by balancing the weight of an actual object against the weight of a known mass.

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 chemical bubbles