<u>Answer:</u> The moles of copper (I) hydroxide are 0.70 moles.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:

We are given:
Given mass of copper (I) hydroxide = 68 g
Molar mass of copper (I) hydroxide = 97.6 g/mol
Putting values in above equation, we get:

Hence, the moles of copper (I) hydroxide are 0.70 moles.