What is the balanced form of the chemical equation shown below? Zn(NO3)2(aq) + Na S(aq) → ZnS(s) + NaNO3(aq)
A. Zn(NO3)2(aq) + Na2S(aq) → ZnS(s) + 2NaNO3(aq)
B. Zn(NO3)2(aq) + Na S(aq) → ZnS(s) + NaNO3(aq)
C. ZnNO3(aq) + Nas(aq) → ZnS(s) + NaNO3(aq)
O D. 2Zn(NO3)2(aq) + Na2S(aq)
ZnS(s) + 3NaNO3(aq)

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5