Answer:
3 gram, 1.5 gram molecules
Step-by-step explanation
Atom mass of O is 16 U
number of gram atom of oxygen= mass/gram atomic mass
gram atomic mass is the mass of the substance represented in grams.
Gram atomic mass of oxygen is 16g.
number of atoms= 48/16= 3gram atom of 0
Molecular mass of oxygen Is 32g.
Number of gram molecules
= gram/ mass
=48/32= 1.5 molecules