A. 42
B. 45
C. 126
D. 180
E. 145
Correct Answer:
Option D – 180
Explanation
Empirical formula = CH2O
= 12 + (2 x 1) + 16
= 30
Molecular formula = (CH2O)n, where n is a whole number.
= 30n
∴ From the options, only 180 is a multiple of 30. Hence, that is the only likely molecular mass with respect to CH2O.
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![A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen. If the molar mass of the compound is 180. Find the molecular formula. [H = 1, C = 12, O = 16]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen. If the molar mass of the compound is 180. Find the molecular formula. [H = 1, C = 12, O = 16]")
