How many atoms are represented by the formula (nh4)2co3?

Answer is: there are 14 atoms represented by the formula (NH₄)₂CO₃.
In ammonium carbonate there are two nitrogen atoms (because two ammonium cations), eight hydrogen atoms (because two ammonium cations), one carbon atom and three oxygen atoms:
2 · 1N + 2 · 4H + 1C + 3O = 14 atoms.
Ammonium carbonate is a salt.

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.