9. I Calculate the molar mass of Cu_(2)O 143g/mol 45g/mol 79.5g/mol 37g/mol Multiple Choice 10 points

To calculate the molar mass of $Cu_{2}O$, we need to find the atomic masses of copper (Cu) and oxygen (O) and then multiply the atomic mass of copper by 2 (since there are 2 copper atoms in the compound) and add the atomic mass of oxygen.<br /><br />The atomic mass of copper (Cu) is approximately 63.55 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol.<br /><br />So, the molar mass of $Cu_{2}O$ is:<br /><br />$2 \times 63.55 \, \text{g/mol} + 16.00 \, \text{g/mol} = 143.10 \, \text{g/mol}$<br /><br />Therefore, the correct answer is $143 \, \text{g/mol}$.