What is the excess reactant of water?

The ice is said to be "limiting" because it is the ingredient we would run out of first, which puts a limit on how much ice water we can make. The water is called the excess reactant because we had more of it than was needed.

Explanation:

Hydrogen

Explanation:

An example of this can be In this example, hydrogen is the limiting reagent and oxygen is the excess reagent. The amount of product formed is limited by the amount of hydrogen.

the answer is barium and copper bromide