How many molecules are in 2.0 moles of molecular hydrogen? A) 6.0x1023 molecules H2 B) 2.0x1024 molecules H2 C) 3.0x1023 molecules H2 D) 1.2x1024 molecules H2

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;