The hollow bones of birds, which keep birds lightweight for flying, is an example of

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?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Which statement can best be concluded from the ideal gas law?