Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements. a john dalton
b henry mosely
c dmitri mendeleev
d antoine lavoisier

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