Which of the following is a hydrophobic material a

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4) Which of the following is a hydrophobic material? A) paper B) table salt C) wax D) sugar E) pasta Answer: C 5) We can be sure that a mole of table sugar and a mole of vitamin C are equal in their 6) How many grams of acetic acid (C 2 H 4 O 2 ) would you use to make 10 L of a 0.1 M aqueous solution of acetic acid? (Note: The atomic masses, in daltons, are approximately 12 for carbon, 1 for hydrogen, and 16 for oxygen.) A) 10.0 g B) 0.1 g
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20 C) 6.0 g D) 60.0 g E) 0.6 g Answer: D 7) Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake? 8) What is the hydroxide ion concentration of the lake described in question 7? 9) Draw three water molecules and label the atoms. Draw solid lines to indicate covalent bonds and dotted lines for hydrogen bonds. Add partial charge labels as appropriate. Answer:
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