Calculate the weight of lime (CaO) obtained by heating 150kg of 90% pure lime stone (`CaCO_3`).
`CaCO_3​→CaO+CO_2` ​

Options

A. 60Kg
B. 75.6Kg
C. 98Kg
D. 70Kg

Explanation

To calculate the weight of lime (CaO) obtained by heating 150 kg of 90% pure limestone (CaCO₃), we can follow these steps:

### Step 1: Calculate the amount of pure limestone (CaCO₃)
Given that the limestone is 90% pure, we need to find out how much of the 150 kg is pure CaCO₃.

\[ \text{Amount of pure CaCO}_3 = 90\% \text{ of } 150 \text{ kg} = \frac{90}{100} \times 150 = 135 \text{ kg} \]
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