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Nitrogen and oxygen combine with each other to form a series of compounds. This chart summarizes laboratory research done on this series of compounds. From the data supplied, calculate the empirical and molecular formulas for each oxide listed.


Compound
Percentage
Nitrogen
Percentage
Oxygen
Molecular
Mass
A
63.6
36.4
44.01 u
B
30.4
69.6
46.00 u
C
36.9
63.1
76.01 u
D
25.9
74.1
108.01 u
E
46.7
53.3
30.01 u


66. Compound A is _______________.

67. Compound B is _______________.

68. Compound C is _______________.

69. Compound D is _______________.

70. Compound E is _______________.

This was originally a table but I copied and apsted it



Answer :

Hippalectryon
Let's use PO (resp PN) to denote the percentage of oxygen (resp nitrogen) and M for the molar mass.

A : PO/PN~1/2 -> We try N(2)O, which has M=2*14+16=44 which matches with the experimental data.

B : PO/PN~2 -> We try NO(2), which has M=14+2*16=46 which matches

C : PO/PN~3/2 -> We try N(2)O(3) which has M=14*2+3*16 76 which matches

D : PO/PN~5/2 -> We try N(2)O(3) which has M=14*2+5*16=108 which matches

E : PO/PN~1 -> We try NO which has M=30 which matches

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