Read the following chemical equations. reaction 1: h2s + cl2 → 2hcl + s reaction 2: fe + s → fes which of the following statements is true for both the chemical equations? a. chlorine is reduced in reaction 1 and iron is reduced in reaction 2. b. chlorine is oxidized in reaction 1 and iron is oxidized in reaction 2. c. chlorine is oxidized in reaction 1 and iron is reduced in reaction 2. d. chlorine is reduced in reaction 1 and iron is oxidized in reaction 2.

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

Which statement best describes the function of enzymes?

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?