What weight of zinc would be required to produce enough hydrogen to reduce completely 8.5 g of copper oxide to copper ?

Explanation

To find the weight of zinc required to produce enough hydrogen to reduce 8.5 g of copper oxide (CuO) to copper (Cu), we can follow these steps:

### Step 1: Write the Reaction
The reaction for the reduction of copper oxide by hydrogen is:
\[ \text{CuO} + \text{H}_2 \rightarrow \text{Cu} + \text{H}_2\text{O} \]

### Step 2: Calculate Molar Mass of CuO
The molar mass of CuO can be calculated as follows:
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