How many moles of NH3 can be made from 0.93 moles N2? 0.62 mol NH3
1.86 mol NH3
0.93 mol NH3
0.47 mol NH3

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

lol idk man i guess u gotta ask bill nye the science guy

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements