Aquatic organisms that lived hundreds of millions of years ago and were buried in silt and sediment resulted in the formation of

Which of these conditions most likely produces an unstable isotope?

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.

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.