What must be done to crude oil for it to be separated ? it must be filtered or chemically altered

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

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at