If the combustion of 1 g of graphite produces -20.7 kJ of heat, what will be molar enthalpy change? Give the significance of sign also.

Explanation

To find the molar enthalpy change for the combustion of graphite, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the given data**:
- Heat produced from the combustion of 1 g of graphite = -20.7 kJ
- Molar mass of graphite (carbon) = 12 g/mol

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