10 moles of Al4C3 are needed. How many moles of Al are required? How many moles of carbon are required?

Motivation cannot be developed with practice; a person either possesses it or they do not.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

How to convert a density of 0.791g/cm3 to lb/ft3