B) It has increased slightly
Answer:
H3AsO4 → As2O5 + H2O
Explanation:
The first equation is balanced:
H3AsO4 → As2O5 + H2O
Here's a breakdown of the balanced equation:
Reactants:
H3AsO4: 3 hydrogen atoms, 1 arsenic atom, and 4 oxygen atoms
Products:
As2O5: 2 arsenic atoms and 5 oxygen atoms
H2O: 2 hydrogen atoms and 1 oxygen atom
As you can see, the number of atoms of each element is the same on both sides of the equation. This means that the equation is balanced.