How much calcium oxide is formed when 82 g of calcium nitrate is heated ? Also find the volume of nitrogen dioxide evolved :
`2Ca(NO_3)_2 rarr 2CaO + 4NO_2 + O_2`
(Ca = 40, N = 14, O = 16)

Explanation

To solve the question, we will follow these steps:

### Step 1: Calculate the molar mass of calcium nitrate (Ca(NO₃)₂).
- Calcium (Ca) = 40 g/mol
- Nitrogen (N) = 14 g/mol (there are 2 nitrogen atoms)
- Oxygen (O) = 16 g/mol (there are 6 oxygen atoms)

**Calculation:**
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