HELLPPP PLEASE. 50PTS ITS URGENT

Ella wants to construct an electrochemical cell using the following materials :
1.Salt water (as electrolyte)
2.Copper strip
3.Zinc Strip or Aluminum foil
4.Voltmeter and/or LED (to confirm the passage of electric current)
5.Two beakers
6.Insulated wires

Questions
1.If Ella can't find the copper strip can she use copper wire?

2. Are there any other materials she will need? If so state them.

3. What can she use as a substitute for insulated wire.

4.Write a step to step procedure on how she can construct an electrochemical cell using the given materials listed above.

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

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

How does the motion of particles in a gas change as the gas cools