posted by john on .
calculate the number of atoms in the following masses.
a) 54.0g of aluminum
b) 69.45 g of lathanum
c) 0.697 g of gallium
d) 0.000 000 020 g of beryllium
The atomic mass of Al is 1 mol and it contains 6.02 x 10^23 atoms Al.
The atomic mass of La is 1 mol and it contains 6.02 x 10^23 atoms La.
Get the picture?
Post your work and we will check it for you.