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08-02-2022
Chemistry

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a compound has an empirical formula of NaO and a molar mass of 78g/mol. what is its molecular formula

Respuesta :

17-02-2022

Answer:

Na2O2

Explanation:

Molecular Formula= Molar Mass/Empirical formula mass

To find empirical formula it is atomic weight of each element times the subscript added together. so since no subscript just mass of the elements added together

Na=23

O=16

23+16=39

78/39 = 2

2 times each element and thats the subscript

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