Element X has 3 natural isotopes. One has a mass of 11.99 amu and a relative abundance of 15.56%, the next has a mass of 10.89 amu and a relative abundance of 41.24%, and
the last has a mass of 12.25 amu and a relative abundance of 43.20%. Calculate the
average atomic mass.

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

How many atoms are in 2 moles of phosphorus?

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity