Briefly describe how you would use the Aufbau principle, the Pauli exclusion principle, and Hund's rule to predict the location of electrons in an atom.
(I need help on this)

What is the number of moles in 15.0 g ash3?

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community