Based on your knowledge of the polarity of water

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15) Based on your knowledge of the polarity of water molecules, the solute molecule is most likely A) positively charged. B) negatively charged. C) without charge. D) hydrophobic. E) nonpolar. Answer: A Topic: Concept 3.2 Skill: Application/Analysis
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5 16) Hydrophobic substances such as vegetable oil are 17) One mole (mol) of a substance is 18) How many molecules of glucose (C 6 H 2 O 6 molecular mass =180 daltons) would be present in one mole of glucose? 19) How many molecules of glycerol (C 3 H 8 O 3 ) would be present in 1 L of a 1 M glycerol solution? A) 1 B) 14 C) 92 D) 1 × 10 7 E) 6.02 × 10 23 Answer: E Topic: Concept 3.2 Skill: Knowledge/Comprehension
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6 20) When an ionic compound such as sodium chloride (NaCl) is placed in water the component atoms of the NaCl crystal dissociate into individual sodium ions (Na + ) and chloride ions (Cl - ). In contrast, the atoms of covalently bonded molecules (e.g., glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. Which of the following solutions would be expected to contain the greatest number of particles (molecules or ions)? 21) The molecular mass of glucose is 180 g. Which of the following procedures should you carry out to make a 1 M solution of glucose?
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