8g of `O_(2)` gas at S.T.P. is expanded so that volume is doubled. Calculate work in
atm L

Explanation

To solve the problem of calculating the work done when 8g of O₂ gas is expanded at STP until its volume is doubled, we can follow these steps:

### Step 1: Determine the number of moles of O₂
First, we need to calculate the number of moles of O₂ in 8 grams. The molar mass of O₂ (oxygen gas) is 32 g/mol.

\[ \text{Number of moles (n)} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} = \frac{8 \text{ g}}{32 \text{ g/mol}} = 0.25 \text{ moles} \]
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