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.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

Can someone me with questions 12 and 13 plz.