# Don't know how to do this stoichiometric problem with 4 questions.

1. Sep 10, 2012

### gurpalc

1. The problem statement, all variables and given/known data

attached
http://imgur.com/CiUX9

2. Relevant equations

n/a

3. The attempt at a solution

I got the first 3 answers. But I don't know what this is asking for. What is CuO. Where did that come from. Is \n't it supposed to be Cu(OH)2?

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2. Sep 10, 2012

### AGNuke

$CuO + H_2O \rightarrow Cu(OH)_2$
It is just hydrated form, nothing to worry about.

3. Sep 11, 2012

### Staff: Mentor

I would put it as

Cu(OH)2 -> CuO + H2O

copper hydroxide easily decomposes, but copper oxide doesn't react with water.