All of the factors that can change in an experiment are called variables. Which of the following is true about the variables in an experiment?
A.
One variable should change and the others should be kept the same.
B.
All variables should be kept the same.
C.
One variable should be kept the same and at least two variables should change.
D.
All variables should change.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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