Question

Calculate the number of atoms in a 3.31 x 10 g sample of lithium.
g

Answer 1

Explanation:

atomic mass of Li = 7 amu

so we know that there are about (33.1)/7 = 0.47 mol

Multiply this by 6.02 * 10^23 particles per mol, and we get about 2.83 * 10^23 particles