Eamcet Chemistry - 1st Year : Unit 1.2 (Basics & Concepts) - Emperical & Molecular Formula Free Online Tests | Mock Tests | Preparation | Practice Tests

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Eamcet Chemistry
1st Year : Unit 1.2 (Basics & Concepts) - Emperical & Molecular Formula

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A certain compound has the molecular formula X₄O₆. If the compound contains 56.2% of X. Then the atomic mass of X is

A. 48 a.m.u

B. 42 a.m.u

C. 30.8 a.m.u

D. 62.0 a.m.u

E. None of the above

View Answer

Correct choice: C

Explanation:

1mole X₄O₆ contains 96gm of O
Given 56.2gm X combines with 43.8gm O
Wt of X that combines with 96gm O =(96/43.8)X56.2 =123.18
Atomic mass of X=123.18/4 =30.79amu

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Eamcet Chemistry 1st Year : Unit 1.2 (Basics & Concepts) - Emperical & Molecular Formula

Eamcet Chemistry
1st Year : Unit 1.2 (Basics & Concepts) - Emperical & Molecular Formula