Part 1 of 8 - 6.0/ 6.0 Points
Question 1 of 23 2.0/ 2.0 Points
Which form of electromagnetic radiation has the longest wavelength?
A. Infrared Radiation
B. Radio Waves
C. Gamma Rays
D. Microwaves
E. X-rays
Answer Key: B
Question 2 of 23 2.0/ 2.0 Points
How many subshells are there in the n = 4 principal shell?
A. 1
B. 3
C. 2
D. 4
E. not enough information
Answer Key: D
Question 3 of 23 2.0/ 2.0 Points
Which element is represented by the electron configuration 1s22s22p2?
A. Be
B. C
C. He
D. O
E. none of the above
Answer Key: B
Part 2 of 8 - 6.0/ 6.0 Points
Question 4 of 23 2.0/ 2.0 Points
The electronegativity value for Mg is 1.2 and the value for O is 3.5. Based on these values, what type of bond is expected for a compound formed between Mg and O?
A. Polar covalent
B. Ionic
C. Pure covalent
D. not enough information
E. none of the above
Answer Key: B
Question 5 of 23 2.0/ 2.0 Points
What is the molecular geometry of SiH4?
A. linear
B. bent
C. trigonal pyramidal
D. tetrahedral
E. not enough information
Answer Key: D
Question 6 of 23 2.0/ 2.0 Points
What is the molecular geometry of carbon dioxide, ?
A. linear
B. trigonal pyramidal
C. tetrahedral
D. bent
E. not enough information
Answer Key: A
Part 3 of 8 - 6.0/ 6.0 Points
Question 7 of 23 2.0/ 2.0 Points
At STP, 12.69 g of a noble gas occupies 14.09 L. What is the identity of the noble gas? (R= 0.0821 L atm/ mol K)
A. Ar
B. Ne
C. Kr
D. He
E. not enough information
Answer Key: B
Question 8 of 23 2.0/ 2.0 Points
The vapor pressure of water at 20.0°C is 17.5 mm Hg. If the pressure of a gas collected over water was measured to be 453.0 mm Hg. What is the pressure of the pure gas?
A. 0.573 atm
B. 0.619 atm
C. 0.0230 atm
D. 0.596 atm
E. none of the above
Answer Key: A
Question 9 of 23 2.0/ 2.0 Points
Suppose a balloon was released from the ground and rose to such a height that both the atmospheric pressure and atmospheric temperature decreased. Which statement is TRUE?
A. Both the temperature and pressure changes act to decrease the balloon's volume.
B. The temperature change acts to increase the balloon's volume.
C. The pressure change acts to decrease the balloon's volume.
D. Both the temperature and pressure changes act to increase the balloon's volume.
E. none of the above
Answer Key: E
Part 4 of 8 - 6.0/ 6.0 Points
Question 10 of 23 2.0/ 2.0 Points
Which molecule below has hydrogen bonding?
A. H2
B. CH3CH2OH
C. HCl
D. CH4
E. all of the above
Answer Key: B
Question 11 of 23 2.0/ 2.0 Points
Which state of matter has a low density and an indefinite volume?
A. liquids
B. gases
C. solids
D. both solids and liquids
E. none of the above
Answer Key: B
Question 12 of 23 2.0/ 2.0 Points
Which compound in liquid form will have the highest vapor pressure?
A. CH4
B. CH3CH2OH
C. CH3CH3
D. CH3C(O)CH3
E. not enough information
Answer Key: A
Part 5 of 8 - 6.0/ 6.0 Points
Question 13 of 23 2.0/ 2.0 Points
If you add 4.00 mL of pure water to 6.00 mL of 0.750 M NaCl solution, what is the concentration of sodium chloride in the diluted solution?
A. 0.250 M
B. 0.450 M
C. 1.13 M
D. 0.500 M
E. none of the above
Answer Key: B
Question 14 of 23 2.0/ 2.0 Points
The solubility of gases in water:
A. is independent of temperature.
B. decreases with increasing temperature.
C. increases with increasing temperature.
D. gases are not soluble in water.
E. none of the above
Answer Key: B
Question 15 of 23 2.0/ 2.0 Points
We dissolve 2.45 g of sugar in 200.0 g water. What is the mass percent of sugar in the solution?
A. 123%
B. 1.23%
C. 1.21%
D. 2.42%
E. none of the above
Answer Key: C
Part 6 of 8 - 6.0/ 6.0 Points
Question 16 of 23 2.0/ 2.0 Points
Which of the following is NOT an acid-base conjugate pair?
A. H2CO3 and HCO3-
B. NH4+ and NH3
C. H2S and OH-
D. H2O and OH-
E. none of the above
Answer Key: C
Question 17 of 23 2.0/ 2.0 Points
What are the products of a neutralization reaction?
A. salt and carbon dioxide
B. water and salt
C. carbon dioxide and water
D. oil and water
E. none of the above
Answer Key: B
Question 18 of 23 2.0/ 2.0 Points
Consider a 1.6 × 10-3 M solution of HNO3. Which of the following statements is NOT true?
A. This solution has a pH of 11.20.
B. This solution could neutralize a base.
C. This solution would turn litmus to red.
D. This solution could dissolve metal.
E. none of the above
Answer Key: A
Part 7 of 8 - 6.0/ 6.0 Points
Question 19 of 23 2.0/ 2.0 Points
What is the molecular geometry of the red carbon atom in the following compound,
A. bent
B. linear
C. trigonal planar
D. tetrahedral
E. none of the above
Answer Key: B
Question 20 of 23 2.0/ 2.0 Points
The compound named 2,3-dimethylpentane would have how many total number of carbons?
A. 5
B. 3
C. 7
D. 8
E. none of the above
Answer Key: C
Question 21 of 23 2.0/ 2.0 Points
A compound named "propanal" would be classified as an
A. ether.
B. amine.
C. aldehyde.
D. alcohol.
E. none of the above
Answer Key: C
Part 8 of 8 - 4.0/ 4.0 Points
Question 22 of 23 2.0/ 2.0 Points
All of the following are usable forms of carbohydrates by humans EXCEPT:
A. sucrose.
B. glucose.
C. glycogen.
D. cellulose.
E. both C and D
Answer Key: D
Question 23 of 23 2.0/ 2.0 Points
Which of the following is a saturated fatty acid?
A. linolenic acid
B. capric acid
C. oleic acid
D. linoleic acid
E. All of the above are saturated fatty acids.
Answer Key: B
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