What is calorific value of petroleum if 0.25 g of petroleum is burnt in a calorimeter containing 3 kg of water and having a water equivalent of 400 gm. The rise in temperature is `10^@C`

Explanation

To find the calorific value of petroleum, we can follow these steps:

### Step 1: Calculate the heat absorbed by water (Q1)
The formula to calculate the heat absorbed by water is:
\[ Q_1 = m \cdot c \cdot \Delta T \]
where:
- \( m \) = mass of water (in grams)
- \( c \) = specific heat capacity of water (1 cal/g°C)
...