Lucy wants to attach a goal cost to each of her life goals. Why might she do this?

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done