This seems so simple, yet I have no idea how to get the answer for part b.
(table of masses of proton, neutron and electron)
a) Calculate the mass of an atom of hydrogen which is made from a proton and anelectron. Answer: 1.6734 × 10–24 g
b) Calculate the mass of one mole of such hydrogen atoms giving your answer to fourdecimal places. (The Avogadro constant, L = 6.0225 × 1023 mol–1)
The answer is meant to be 1.0078 g
Someone explain please!!