4 Co (s) + 3 O2(g) -2 C0203 (s) If 1.00 mole of cobalt metal is reacted with 1.00 mole of oxygen gas, what is the maximum amount of Co203 that can be synthesized?

Which formula equation represents the burning of sulfur to produce sulfur dioxide? s(s) + o2(g) 4502(9) 2h2s(s) + 302(g) —> 2h20(0) + 2502(9) 4fes2+1102 —> 2fe2o3 + 8502 2802(g) + o2(9) v205 , 2503(9)

The ammonia molecule in the diagram has the observed bond orientation because

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal