1) List the known and unknown quantities.
Sample: 7 mol NaCl
Particles: unknown
2) Convert moles of NaCl to particles of NaCl.
Avogadro's number is 6.022*10^23
1 mol = 6.022*10^23
[tex]particles\text{ }NaCl=7\text{ }mol\text{ }NaCl*\frac{6.022*10^{23}\text{ }particles}{1\text{ }mol\text{ }NaCl}=4.21*10^{24}\text{ }particles[/tex]7 mol NaCl is equal to 4.21*10^24 parcicles.
