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Questions

Explanations

36 What is the number of moles of KF in a 29-gram sample of the compound?

(1) 1.0 mol          (3) 0.50 mol

(2) 2.0 mol          (4) 5.0 mol

37 Which bond is most polar?

(1) C–O                 (3) N–O

(2) H–O                (4) S–O

table S electronegativity

38 Based on Table F, which equation represents a saturated solution having the lowest concentration of Cl^- ions?

39 What is the molarity of a solution that contains 0.500 mole of KNO3 dissolved in 0.500-liter of solution?

(1) 1.00 M           (3) 0.500 M

(2) 2.00 M           (4) 4.00 M

40 Given samples of water:

Sample 1: 100. grams of water at 10.°C

Sample 2: 100. grams of water at 20.°C

Compared to sample 1, sample 2 contains

(1) molecules with a lower average kinetic energy

(2) molecules with a lower average velocity

(3) less heat energy

(4) more heat energy

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-54
 Questions 55-56 Questions 57-59 Questions 60-62 Questions 63-65  Questions 66  Questions 67-69  Questions 70-72 Questions 73-77 Questions 78-81 Questions 82-85