13.) When the initial concentration of A in the reaction: A ↓ products was 0.700 M, the initial rate of this first order reaction was measured as 2.10 × 10–4 mole/L·s (M/s).
a.) What is the rate constant (k) for this reaction?
b.) What is the half-life of this reaction?

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

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg