How many moles of aspirin, C 9 H 8 O 4 , are in a bottle containing 450 g by weight? (Note: The approximate atomic weights of its atoms are C = 12, H = 1, and O = 16.) Given the following types of...

How many moles of aspirin, C₉H₈O₄, are in a bottle containing 450 g by weight? (Note: The approximate atomic weights of its atoms are C = 12, H = 1, and O = 16.)

Given the following types of atoms, decide which type of bonding, ionic or covalent, is most likely to occur:

(a) two oxygen atoms;