4) The combustion of propane (C3Hg) in the presence of excess oxygen yields CO2 and H2O C3H8 (g) 502 (g) 3CO2 (g) + 4H2O (g) When 2.5 mol of O2 are consumed in their reaction,, mol of CO2 are produced. A) 5.0 B) 1.5 C25 D) 3.0 E) 6.0 5) The correct name for Al2O3 is, A) aluminum hydroxide B) aluminum oxide C) aluminum trioxide D) dialuminum trioxide E) dialuminum oxide 6) The name of the ionic compound (NH4)3PO4 is, A) ammonium phosphate B) tetrammonium phosphate C) triammonium phosphate D) nitrogen hydrogen phosphate E) ammonia phosphide 7) There are, A) 50 B) 1.5x 1025 C) 4.81025 sulfur atoms in 25 molecules of C4H452. D) 3.0 x 1025 E) 6.021023 8) The correct formula of iron(III) bromide is, A) Febr B) FeBr3 C) FeBr2 D) Fe3Br3 E) Fe3Br