91.3g of O2 reacts with NH3 what mass of NH3 also reacts?

can someone explain??

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next