WorksheetsCHM1151 exam 2 review
Total questions: 14
Worksheet time: 7mins
Which of the following has the greatest number of oxygen atoms per mole?
H2O2
CO2
CO
SO3
What is the molar mass of aluminum sulfate, Al2(SO4)3?
150.1 g/mol
278.0 g/mol
342.2 g/mol
294.1 g/mol
The molecule ozone (O3) exhibits:
Only one valid Lewis structure
Two equivalent resonance structures
Three distinct resonance structures
No resonance
What is the hybridization of the central carbon in formaldehyde, CH2O?
sp
sp2
sp3
sp3d
Which of the following compounds is nonpolar?
H2O
CO2
NH3
SO2
A solution contains 18.2 g of glucose (C6H12O6) dissolved in 150. mL of water (density = 1.00 g/mL). What is the m/m% percent of glucose?
10.8%
12.1%
8.5%
9.7%
What is the hybridization of the sulfur atom in SF6?
sp3
sp3d
sp3d2
sp2
A 2.50 M NaOH solution is diluted to 500. mL. If the final concentration is 0.500 M, what was the initial volume of NaOH used?
25.0 mL
50.0 mL
100. mL
250. mL
The molecular shape of XeF2 is:
Bent
Tetrahedral
Linear
Trigonal planar
A compound with the empirical formula CH2 has a molar mass of 56.0 g/mol. What is its molecular formula?
CH2
C2H4
C3H6
C4H8
Which of the following molecules exhibits sp3d hybridization at the central atom?
BF3
SiCl4
CH4
SF4
What is the molarity of a solution prepared by dissolving 10.0 g NaCl (molar mass = 58.44 g/mol) in enough water to make 250. mL of solution?
0.171 M
0.342 M
0.684 M
1.37 M
Which statement about sigma (σ) and pi (π) bonds is true?
A π bond forms from end-to-end overlap of orbitals.
A σ bond forms from side-by-side overlap of orbitals.
π bonds are stronger than σ bonds.
A triple bond consists of one σ bond and two π bonds.
The shape around the central atom in ClF3 is:
T-shaped
Seesaw
Square planar
Trigonal planar
