450mL of oxygen gas at `20^(@)C" is heated to "50^(@)C.` What is the new volume of the gas at constant pressure?

Explanation

To solve the problem of finding the new volume of oxygen gas when it is heated from 20°C to 50°C at constant pressure, we can use Charles' Law. Here’s a step-by-step solution:

### Step 1: Understand Charles' Law
Charles' Law states that the volume of a gas is directly proportional to its absolute temperature (in Kelvin) when the pressure is held constant. The formula can be expressed as:
\[ \frac{V_1}{T_1} = \frac{V_2}{T_2} \]
Where:
- \( V_1 \) = initial volume
- \( T_1 \) = initial temperature (in Kelvin)
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