How many water molecules H2O can be produced from 6 molecules of hydrogen gas (H2) reacting with 6 molecules of oxygen gas (O2)? Which is the limiting reactant?
a. 6 water molecules, hydrogen is limiting
b. 3 water molecules, oxygen is limiting
c. 3 water molecules, hydrogen is limiting
d. 12 water molecules, oxygen is limiting

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol