It's NF3 (one Nitrogen and 3 Flouride)
Answer:
Grade A is the best percentage that is developing, proficient, exceeding, and emerging
If you increase the volume the pressure will decrease. so the best answer is C
Hydrogen (H) was first, followed by helium (He).
NH4+ and NH3 are an acid-conjugate base pair, since NH4+ is an acid, while NH3 is its conjugate base (since it is without the H+).
H2O and H3O+ can also be considered an acid-conjugate base pair, since H3O+ is an acid, while H2O would be its conjugate base. (But if only 1 answer is to be selected, it should be the NH4+ and NH3)
NH4+ and H3O+ are both acids, and both H2O and NH3 can be considered bases.