What is the volume of a sample of oxygen at a pressure of `3.5"bar"` if its volume at `1`bar is `3.15 L` at the same temperature?

Explanation

To solve the problem of finding the volume of a sample of oxygen at a pressure of 3.5 bar, given that its volume at 1 bar is 3.15 L at the same temperature, we can use Boyle's Law. Here’s a step-by-step solution:

### Step 1: Understand Boyle's Law
Boyle's Law states that for a given mass of gas at constant temperature, the pressure (P) of the gas is inversely proportional to its volume (V). This can be expressed mathematically as:
\[ P_1 V_1 = P_2 V_2 \]
where:
- \( P_1 \) = initial pressure
- \( V_1 \) = initial volume
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