If a gas has an absolute pressure of 319 kpa, its gage pressure is

The absolute pressure is related to the gauge pressure using the following formula:

Pabs = Pg + Patm
where
Pabs = absolute pressure
Pg = gauge pressure
Patm = atmospheric pressure

In units of kPa, Patm = 101.325 kPa.

Pabs = Pg + Patm
319 kPa = Pg + 101.325 kPa
Pg = 217.675 kPa

Thus, the gauge pressure is 217.675 kPa.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.