What is the mass associated with "20 million water molecules?"

Jun 26, 2017

Well $\text{Avogadro's number}$ of water molecules has a mass of $18.01 \cdot g$.......

Explanation:

And $\text{Avogadro's number} \equiv 6.022 \times {10}^{23} \cdot m o {l}^{-} 1$

And thus the mass of $20 \times {10}^{6} \cdot \text{water molecules}$

$\equiv \left(20 \times {10}^{6} \cdot \text{water molecules"xx18.01*g*mol^-1)/(6.022xx10^23*"water molecules} \cdot m o {l}^{-} 1\right)$

$= 6 \times {10}^{-} 16 \cdot g$.........or $\frac{1}{8} \times \frac{1}{5} \times \frac{1}{32} \cdot \text{sweet F....... A...}$

And no balance could measure this........