omarabdellbast3137 omarabdellbast3137
  • 13-12-2017
  • Chemistry
contestada

What is the molecular formula for the compound with a formula mass of 58.12 and an empirical formula of c2h5?

Respuesta :

hadiyababarp1gose
hadiyababarp1gose hadiyababarp1gose
  • 24-12-2017
the molecular formula is C4H10.
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IthaloAbreu
IthaloAbreu IthaloAbreu
  • 18-09-2019

Answer:

C₄H₁₀

Explanation:

The empirical formula is the reduced formula of the molecule. So, calling n the number of empirical formulas, the molecule formula will be:

n(C₂H₅)

The molar mass of C is 12 g/mol, and of H is 1 g/mol. So, the total mass will be:

nx(2x12 + 5x1) = 58.12

29n = 58.12

n = 2

Then, the molecular formula is:

2(C₂H₅) = C₄H₁₀

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