mole concept

Question

At STP, the volume occupied by 2.00 g of H2 gas (M=2) is approximately:

RankGuru · Accepted Answer

1. **Calculate Moles of $H_2$**:
   - $n = \frac{mass}{Molar \ mass} = \frac{2.00 \ g}{2 \ g/mol} = 1.00 \ mol$.
2. **Apply Ideal Gas Molar Volume**:
   - At STP (Standard Temperature and Pressure), $1 \ mol$ of any ideal gas occupies **$22.4 \ L$**.
3. **Conclusion**: Since we have exactly $1.00 \ mol$, the volume is $22.4 \ L$.

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