Calculate the molar mass of copper(II) carbonate.

Explanation

To calculate the molar mass of copper(II) carbonate (CuCO₃), we will follow these steps:

### Step 1: Identify the formula of copper(II) carbonate
The formula for copper(II) carbonate is CuCO₃.

### Step 2: Determine the number of atoms of each element in the formula
In CuCO₃:
- Copper (Cu) has 1 atom.
- Carbon (C) has 1 atom.
- Oxygen (O) has 3 atoms.

### Step 3: Find the atomic masses of each element
- The atomic mass of Copper (Cu) is approximately 63.5 g/mol.
- The atomic mass of Carbon (C) is approximately 12.0 g/mol.
- The atomic mass of Oxygen (O) is approximately 16.0 g/mol.

### Step 4: Calculate the total mass contributed by each element
- For Copper:
\[ 1 \text{ atom of Cu} \times 63.5 \text{ g/mol} = 63.5 \text{ g/mol} \]

- For Carbon:
\[ 1 \text{ atom of C} \times 12.0 \text{ g/mol} = 12.0 \text{ g/mol} \]

- For Oxygen:
\[ 3 \text{ atoms of O} \times 16.0 \text{ g/mol} = 48.0 \text{ g/mol} \]

### Step 5: Add the total masses together
Now, we add all the contributions together:
\[ \text{Total molar mass} = 63.5 \text{ g/mol (Cu)} + 12.0 \text{ g/mol (C)} + 48.0 \text{ g/mol (O)} \]
\[ = 63.5 + 12.0 + 48.0 = 123.5 \text{ g/mol} \]

### Final Answer
The molar mass of copper(II) carbonate (CuCO₃) is **123.5 g/mol**.

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