Which of the following illustrates the law of multiple proportions?
A) The ratio of O to N in NO2 is twice that in NO.
B) NO2 always contains one nitrogen atom and two oxygen atoms.
C) The mass of NO2 is a small whole-number multiple of the mass of NO.
D) NO and NO2 have similar chemical and physical properties.
E) NO2 and N2O4 are the same compound.
Correct Answer:
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