0.15 mL of a solution made from 0.381 g of unknown in 500.00 mL of pentane on a pan of water. After all the pentane evaporated a 24.36 cm2 monolayer of unknown remained on the surface of the water. If the density of the unknown was 0.719 g/mL what was the thickness of the monolayer in micrometers?

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->