What is the average mass of a single phosphorus atom in grams?

Question

What is the average mass of a single phosphorus atom in grams?

Answer 1

According to the periodic table, 1 mole of phosphorous (P) atoms has a mass of 30.97 grams.

Since there are 6.02x10²³ atoms in 1 mol, we can find the mass of 1 atom as follows:

30.97 g P / mol P x 1 mol P / 6.02x10²³ atoms = 5.145x10^-23 g / atom of P