Given [h3o+] = 9.89 x 10-3m find: [oh-] and ph is this acidic, basic or neutral?

The question is incomplete, the complete question is;

Ethan filled 10 cups of the same size with equal amounts of water. He divided the  cups into five groups of two cups each. The groups were placed in five different locations around  his house. After two weeks, he measured the remaining water to determine how much had  evaporated, by measuring how much water remained in each cup.

What is the dependent (data) variable?

A. Location of cups

B. Amount of time they were left in locations

C. Amount of evaporated water

D. Size of cups

C. Amount of evaporated water

Explanation:

The dependent variable is the outcome that is measured or observed in an experiment. In this case, the variable that is being observed is the amount of water left in each cup.

Depending on its location, the amount of water in different locations may not be the same. Therefore, the amount of water left in each cup is regarded as the dependent variable here.