Question

Question #b1f48

Answer 1

Very easy. If you have a given mass here is how you calculate the number of atoms:

`n=m/M`

`n=N/L`

`m` - mass (g)
`M` - molar mass (g/(mole)
`n` - amount of substance (mole)
`N` - number (of atoms for example)
`L` - Avogadro's number `6.022 xx 10^23`

More about the theory behind read here.