A mole of water has [tex]6.022*10^{23}[/tex] molecules of water.
Let's mark moles of water we need to find as [tex]x[/tex] and make the proportion:
[tex]\frac{1}{x}=\frac{6.022*10^{23}}{4.03*10^{22}}[/tex]
Now, let's express [tex]x[/tex] from that proportion:
[tex]x=\frac{1*4.03*10^{22}}{6.022*10^{23}}=\frac{4.03*10^{22}}{6.022*10^{23}}=\frac{4.03}{6.022*10}=\frac{4.03}{60.22}=0.06692=6.69*10^{-2}[/tex]
So, [tex]4.03*10^{22}[/tex] molecules of water equals to [tex]6.69*10^{-2}[/tex] moles of water.
