Question

How many molecules are in 0.456mol of Al2(SO4)3

Answer 1

This is our molar mass. for aluminum sulfate.


\[342.15 \frac{ g }{ mol } \]

but there's another rule and it says that 1 mol of any substance has:

\[1 mol = (6.02x10^{23}particles)\]

set up a proportion, because if we know that this amount of particles is in 1 mol, then we need to find the number of particles in 0.456 moles of our sample.

\[\frac{ 1 mol }{ 6.02x10^{23}particles } = \frac{ 0.456mol }{ x particles }\]

cross multiply, and we get.

\[2.75x10^{23} particles \]

Answer 2

@anabear127