Question

What is the mass of 3.8 1024 atoms of argon (ar)? 0.0039 g 0.16 g 6.3 g 250 g?

Answer 1

Answer:

Atomic mass Ar => 39.948 a.m.u

39.948 g --------------- 6.02x10²³ atoms

?? g -------------------- 3.8x10²⁴ atoms

(3.8x10²⁴) x 39.948 / 6.02x10²³ => 250 g