17 (cont.) b. If you increase the temperature of your oxygen sample to 40.0°C but keep the volume the same, what is
the new pressure of the gas? (5 pts)
P1V1 P2V2
=
T1
T2
so,
(1.50atm)(0.750L ) = (P2 )(0.750L )
293.15K
313.15K
which gives P2 = 1.60 atm.
c. Convert your answer from part b. into Pascals. (3 pts)
 101.315 kPa  1000Pa 
5
1.60atm

 = 1.62 × 10 Pa
1 atm

 1 kPa 
18. a. Draw a correct Lewis structure including all lone pairs and any resonance structures for the chlorate ion,
ClO3–. (2 pts)
O
Cl
O
O
b. Determine how many electron domains there are around chlorine in ClO3–. (1 pt)
4
c. Determine the electron domain geometry of ClO3–. (2 pts)
tetrahedral
d. Determine the molecular geometry of ClO3–. (2 pts)
trigonal pyramidal
e. Determine the hybridization of the chlorine atom in ClO3–. (2 pts)
sp3
f. Determine whether ClO3– is polar or nonpolar. Explain your answer. (3 pts)
ClO3– is polar because the Cl – O bonds are polar and they are arranged so that the Cl ends are at the top of a
pyramid and the O ands are at the bottom of a pyramid.
Cl
O
O
O