Cs(s)+H2O(l)→ ?

i thought it was H2+CsOH but the computer says that's wrong.

2 answers

You have to balance the equation
The answer that you provided is in fact incorrect. The H2+CsOH on the right side of the equation contains 3 hydrogen atoms. However, you only have 2 hydrogen atoms on the left side of the equation. Therefore, your equation is unbalanced. Keep trying!