of at STP is mixed with of at STP. Find the average molecular weight of the mixture. — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{moles } CH_4 = 0.25$; $\text{moles } C_2H_6 = 0.5$. <br>$M_{avg} = \frac{(0.25 \times 16) + (0.5 \times 30)}{0.75} = \frac{4 + 15}{0.75} = 25.33$. [4, 29]