Respuesta :

1 mol has 6,02 * 10^23 molecules.
There are (7,50 * 10^24)/(6,02 * 10^23) = 12,458 moles.
Molar mass 454/12,458 = 36,44 g/mol.

The molar mass of the substance will be "36.5 g/mol".

According to the question,

  • Number of molecules = [tex]7.50\times 10^{24}[/tex]
  • Mass = 454 g

Now,

→ [tex]Mass \ of \ 1 \ molecule = \frac{454}{(7.50\times 10^{24})}[/tex]

hence,

The molar mass will be:

= [tex]\frac{454\times (6.022\times 10^{23})}{7.50\times 10^{24}}[/tex]

= [tex]36.5 \ g[/tex]

Thus the solution above is right.

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