Which of the following illustrates the law of multiple proportions?
A) The mass 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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Q8: A pure substance _
A)must be composed of
Q9: According to the law of definite proportions,_
A)atoms
Q10: Which of the following is a homogeneous
Q11: Which of the following statements is NOT
Q13: Which of the following is NOT a
Q14: Which one of the following is a
Q15: Which of the following is an element?
A)C6H12O6
B)HNO3
C)NaCl
D)CH4
E)O3
Q16: Which of the following is a pure
Q17: Which of the following statements is NOT
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