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A chemist decided to determine the molec...

A chemist decided to determine the molecular formula of an unknown compound. He collects following informations: (P) Compound contains 2:1 H to O atom (number fo atoms).
(Q) Compound has 40% C by mass
(R) Approximate molecular mass of the compound is 178 g.
(S) Compound contains C,H and O only.
What is the % by mass of oxygen in the compound?

A

`53.33%`

B

`88.88%`

C

`33.33%`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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A chemist decided to determine the molecular formula of an unknown compound. He collects following informations: (P) Compound contains 2:1 H to O atom (number fo atoms). (Q) Compound has 40% C by mass (R) Approximate molecular mass of the compound is 178 g. (S) Compound contains C,H and O only. Which of the following could be molecular formula of compound?

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GRB PUBLICATION-MOLE CONCEPT, STOICHIOMETRY & CONCENTRATION TERMS-Comprehension#25
  1. A chemist decided to determine the molecular formula of an unknown com...

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