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mote1985 [20]
2 years ago
5

A compound has an empirical formula of AB and a molar mass of 90 g/mol. What is its

Chemistry
1 answer:
Lelu [443]2 years ago
8 0

Answer:

A3B3

Explanation:

Molecular formula = n x empirical formula

(AB) n = 90

MM of AB = 30 g/mol

30n = 90

Divide both side by the coefficient n i.e 30

n = 90/30 = 3

Molecular formula = n x empirical formula

Molecular formula = n x (AB)

Molecular formula = 3(AB) = A3B3

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