please answer these multiple choice questions, and show your work for each question. thank you

please ignore question that say "(refer to data booklet).

9. Which of the following would produce a precipitate when equal volumes of 0.5 mol/L aqueous solutions of each are mixed? (Refer to the Data Booklet, p 12.) A. AgNO3 and NaCl B. BaCl2 and KNO3 c. NaOH and H2CO3 D. (NH4)2CO3 and K2SO4 10. Solubility data for four different salts in water are shown in the table below. Which salt is most soluble in water at 60C ? A. i c. iii B. ii D. iv 11. Which compound is least soluble in water at 25C ? (Refer to the Data Booklet, p 12.) A. Co(OH)2 C. SrCO3 B. Na3PO4 D. (NH4)2SO4 12. What mass of H3BO3(s) is required to prepare 4.00L of a 0.500 mol/L solution of H3BO3(aq) ? (H3BOO3=61.8 g/mol) A. 2.00g B. 30.9g C. 61.8g D. 124g 13. Which statement explains what happens when an ionic solid is added to a polar, liquid solvent? A. They will dissolve because both solid and solvent particles are uncharged. B. They will dissolve because neither particles are gaseous. C. They will dissolve because the particles of the solid and liquid have similar polarity. D. They will dissolve because the particles in the solid are uncharged. 14. 35.0mL of a solution is diluted by the addition of water to a final volume of 62.0mL. The diluted solution has a concentration of 1.65mol/L. What was the concentration of the original solution? A. 1.56mol/L B. 1.96mol/L C. 2.92mol/L D. 3.16mol/L 15. The destruction of ozone, O3(g), may occur by the mechanism shown below. O3(g)+Cl(g)ClO(g)+O2(g)ClO(g)+O(g)Cl(g)+ O2(g) In this reaction mechanism, what is the Cl(g) ? A. a product of the overall reaction C. the activated complex B. a reaction intermediate D. the catalyst 16. The equation for the decomposition of baking soda is: 2NaHCO3(s)+energy4Na2CO3(s)+CO2(g)+H2O(g) Which of the following would increase the quantity of CO2(g) produced? A. decreasing the temperature C. increasing the pressure B. decreasing the volume D. increasing the temperature 17. Consider the following reactions at 25C. I Ag(aq)+Br(aq)AgBr(s) II 4Fe(s)+3O2(g)2Fe2O3(s) Which of the following statements best describes the relative rates of the two reactions? A. I and II are both fast. C. I is foster than II B. I and II are both slow. D. II is faster than