Question

21) Draw the electron dot formula for dinitrogen oxide, N2O. How many nonbonding electron pairs are in a dinitrogen oxide molecule?

A) 1
B) 2
C) 3
D) 4
E) none of the above

22) What is the electron pair geometry for a phosgene molecule, COCl2?

A) bent

B) linear
C) tetrahedral
D) trigonal planar
E) trigonal pyramidal

23) Which type of energy is associated with position?

A) chemical
B) potential
C) kinetic

D) electrical
E) none of the above

24.  What is the total number of valence electrons in a sulfate ion, SO42-?

A) 30
B) 32
C) 28
D) 2
E) none of the above

25) A sample of nitrogen gas occupies 625 cm3 at 70.0°C and 15.0 psi. What is the final Celsius temperature if the volume is 545 cm3 at 15.0 psi?  

A) 61°C                     B) 80°C                     C) 26°C                     D) 120°C                  E) 299°C

26) Determine the number of resonance structures for a sulfur dioxide molecule, SO2.

A) 1
B) 2
C) 3

D) 4
E) none of the above

Answer 1

N₂0 :N= N = 5: non bonding Electron paus = 4 - Aus: - D) 4 Ans: - D) trigoval plana Amy - ®) potential. total valence Electrons in soa = 6 + 4x6 +2 = 6 + 24 +2 = 32 Aus :- B) 32 TI = 70.0'c = 343 X 1 = 2 2 2 625 545 =) T = 299K 343 T2 = 262 Ans" - () 26 ¢ 26) B) 2