30) Which of the following molecules has a geometry described as trigonal planar? A) CHF3 B) BF3 C) PF3 D) OF2 E) SIH4 31) After drawing the Lewis dot structure for SBr2, determine the number of single bonds, double bonds, and lone pairs on the central atom. A) 2,0,2 B) 2, 0,1 C) 2,0,0 D) 0, 2,0 32) Which of the following compounds is a strong electrolyte? A) H₂0 B) CH40 C) NaF D) CH4 E) 1, 1,0 E) 02 30) 31) 32)

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Chapter1: Chemical Foundations
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30) Which of the following molecules has a geometry described as trigonal planar?
A) CHF3
B) BF3
C) PF3
D) OF2
E) SIH4
31) After drawing the Lewis dot structure for SBr2, determine the number of single bonds,
double bonds, and lone pairs on the central atom.
A) 2,0, 2 B) 2,0,1
C) 2,0,0
32) Which of the following compounds is a strong electrolyte?
A) H₂0
B) CH40
C) NaF
D) CH4
D) Na+, C+, 0²-
E) Nat, C4+, 032-
33) Identify the major ionic species present in an aqueous solution of Na₂CO3.
A) Na₂+, C²-03
B)
Na+, CO32-
C) Na₂+, CO3²-
D) 0, 2,0
A) solution
B) ionic compound
C) solute
D) solid
E) solvent
34) What mass of C6H1206 (glucose) is needed to prepare 450. mL of a 0.650 M solution
of glucose in water?
A) 293 g
B) 0.692 g
C) 52.7 g
D) 0.293 g
E) 125 g
35) What mass of K2CO3 is needed to prepare 200. mL of a solution having a potassium
ion concentration of 0.150 M?
A) 4.15 g
B) 1.49 g
C) 13.8 g
D) 2.07 g
E) 10.4 g
36) A solution is prepared by dissolving 2 g of KCl in 100 g of H₂0. In this solution, H₂O
is the
A) 2.5
B) 1.5
E) 1, 1,0
E) 02
C) 3.5
D) None of the above.
E) 4.4
37) What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of
solution?
30)
31)
32)
33)
34)
35)
36)
37)
Transcribed Image Text:30) Which of the following molecules has a geometry described as trigonal planar? A) CHF3 B) BF3 C) PF3 D) OF2 E) SIH4 31) After drawing the Lewis dot structure for SBr2, determine the number of single bonds, double bonds, and lone pairs on the central atom. A) 2,0, 2 B) 2,0,1 C) 2,0,0 32) Which of the following compounds is a strong electrolyte? A) H₂0 B) CH40 C) NaF D) CH4 D) Na+, C+, 0²- E) Nat, C4+, 032- 33) Identify the major ionic species present in an aqueous solution of Na₂CO3. A) Na₂+, C²-03 B) Na+, CO32- C) Na₂+, CO3²- D) 0, 2,0 A) solution B) ionic compound C) solute D) solid E) solvent 34) What mass of C6H1206 (glucose) is needed to prepare 450. mL of a 0.650 M solution of glucose in water? A) 293 g B) 0.692 g C) 52.7 g D) 0.293 g E) 125 g 35) What mass of K2CO3 is needed to prepare 200. mL of a solution having a potassium ion concentration of 0.150 M? A) 4.15 g B) 1.49 g C) 13.8 g D) 2.07 g E) 10.4 g 36) A solution is prepared by dissolving 2 g of KCl in 100 g of H₂0. In this solution, H₂O is the A) 2.5 B) 1.5 E) 1, 1,0 E) 02 C) 3.5 D) None of the above. E) 4.4 37) What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of solution? 30) 31) 32) 33) 34) 35) 36) 37)
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