## Chemistry: The Central Science (13th Edition)

$SO_3(g)+H_2O(l)\rightarrow H_2SO_4(aq)$
Sulfur trioxide is $SO_3$, water is $H_2O$, sulfuric acid is $H_2SO_4$. $SO_3(g)+H_2O(l)\rightarrow H_2SO_4(aq)$ The equation is in balance with no adjustments.