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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