The density of oxygen at S.T.P. is 16 g `dm^(-3)`. To what temperature it should be heated at a constant pressure that the density becomes 8 g `dm^(-3)` ?

Explanation

To solve the problem, we will use the relationship between density and temperature at constant pressure, derived from the ideal gas law. Here's the step-by-step solution:

### Step 1: Understand the relationship between density and temperature
The density (D) of a gas is inversely proportional to its temperature (T) when pressure (P) is constant. This can be expressed as:
\[ D \propto \frac{1}{T} \]
This means that if the density decreases, the temperature must increase.

### Step 2: Set up the equation using the proportionality
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