Respuesta :

MathPhys

Answer:

4.81×10⁻⁴ g K

Explanation:

Convert atoms to moles:

7.40×10¹⁸ atoms K × (1 mol K / 6.02×10²³ atoms) = 1.23×10⁻⁵ mol K

Convert moles to mass:

1.23×10⁻⁵ mol K × (39.1 g K / mol K) = 4.81×10⁻⁴ g K