In the chemical reaction below, calcium (ca) and water (h2o) react to form calcium hydroxide (ca(oh)2) and hydrogen gas  (h2). ca (s) + 2h2o (l) → ca(oh)2 (aq) + h2 (g) calcium and water are the reactants in this chemical reaction, whereas calcium hydroxide and hydrogen gas are the products that are formed. once the reaction reaches completion, finish the a. the products of the reaction will have changed back into the reactants. b. the total mass of the products will be greater than the original mass of the reactants. c. the total mass of the products will be equal to the original mass of the reactants. d. the total mass of the products will be less than the original mass of the reactants.

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

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work