For each of the acid or base below • Write the chemical equation and identify the acid, base, conjugate acid and conjugate base
• the Ka or Kb expression for each acid or base in water
a. Hydrofluoric acid, HF (aq)
b. Sulfate ion, SO4 2- (aq)

Ethene molecular fórmula= c2h4molecular weight = 29.046g/molhope it : )

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

The answer is probably c. xylem

Replicate prove reliability and validity