Which of the following is least likely to dissolve in the polar solvent water?oilsaltsugarethanolQuestion 2 (Multiple Choice Worth 3 points)If 3.2 moles of NaCl are dissolved in enough water to make a 0.98-liter solution, what is the molarity of the solution?0.31 M NaCl0.77 M NaCl1.3 M NaCl3.3 M NaClQuestion 3 (Essay Worth 4 points)What would be the resulting molarity of a solution made by dissolving 31.3 grams of Ca(OH)2 in enough water to make a 1050-milliliter solution? Show all of the work needed to solve this problem.Question 4 (Multiple Choice Worth 3 points)Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water?increasing temperatureincreasing pressuredecreasing surface areadecreasing temperatureQuestion 5 (Multiple Choice Worth 3 points)If 25.8 grams of BaO dissolve in enough water to make a 212-gram solution, what is the percent by mass of the solution?8.22% BaO8.92% BaO10.8% BaO12.2% BaOQuestion 6 (Multiple Choice Worth 3 points)If 35.8 grams of LiCl are dissolved in 184 grams of water, what is the concentration of the solution in percent by mass?5.14% LiCl16.3% LiCl19.5% LiCl24.2% LiClQuestion 7 (Essay Worth 3 points)Describe, in your own words, why sugar will dissolve faster in hot tea than it will in cold tea. Be specific in your explanation.Question 8 (Multiple Choice Worth 3 points)Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H2O)?Both the solute and solvent contain ionic bonding, which makes them compatible.The solute and solvent react together to form a new compound.Ions from the solute have a strong attraction to the polar solvent molecules.It does not require much energy to break the covalent bonds in the water molecules.

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1. oil 2. 3.3 M3. 0.403 M’4.decrease temperature 5. Don’t see correct answer in the choices6. 19.5%7. Increased molecular kinetics –> increase molecular interaction rates8. Ions from the solute….