Respuesta :

Edufirst
38 g / (3 x 10^23 molecules) * 6,02x10^23 molecules/mol = 76,25 g/mol.
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Answer:

76.3 g of 1 mole of element Z

Explanation:

According to Avogadro’s number the number of particles in 1 mole of a substance is 6.023 x 10²³.  

The mass of 3 x 10²³ particles is 38g  

Therefore, the mass of 6.023 x 10²³ is [tex]\frac{ 38 g  x 6.023 x 10^2^3}{3 x 10^2^3}[/tex] = 76.3 g