Billy expands when his fuel starts to run out. He isn't as hot on the surface anymore, which makes him red, and he is many times larger
than he used to be. He is now called a red giant.
What does Billy do now? (Billy has 1 stellar mass.)
expands even more
contracts to form a white dwarf
has a supernova

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?