8.3 mols Al2O3 x 3 mol O2/ 2 mol Al2O3= ?

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.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

No copying 15 pts how does a free-body diagram tell you about the net force on an object?