Which word equation shows hydrogen reacting with oxygen to form water?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+