Some of the characteristics that make a good index fossil are: a. the organism lived over a wide area.
b. they lived for long periods of time.
c. they lived for fairly short periods of time.
d. the organism was in abundance.

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How do dying stars contribute to the formation of planets