10. How many grams of Ca(NO3)2 can be produced by reacting excess HNO, with 6.55 g of Ca(OH)2? Ca(OH)2 + 2HNO3 → Ca(NO3)2 + 2H₂O a) 7.25 g b) 13.1 g c) 29.0 g d) 14.5 g e) 6.55 g 11. The following reactions ZnBr2(aq) + 2AgNO3(aq) → Zn(NO3)2(aq) + 2AgBr(s) KBr(aq) + AgNO3(aq) → AgBr(s) + KNO3(aq) are examples of precipitation reactions oxidation-reduction reactions a) b) acid-base reactions c) d) A and C none of these 12. Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as gaining heat from the surroundings? A) q = +, w=- B) q=-, w=+ C) q = +, w=+ D) q=-, w=- E) None of these represent the system referenced above.