What is the weight of molecules of ? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
What is the weight of $1 \times 10^{22}$ molecules of $CuSO_4 \cdot 5H_2O$?
Answer: $4.14 \TEXT{ G}$
💡 Solution & Explanation
$MW = 63.5 + 32 + 64 + 90 = 249.5$. <br>$\text{moles} = 10^{22} / 6.022 \times 10^{23} \approx 0.0166 \text{ mol}$. <br>$\text{Mass} = 0.0166 \times 249.5 \approx 4.14 \text{ g}$.
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