Use the following steps to balance the redox reaction below: Na + Cu2+ → Na+ + Cu

a. Write the oxidation and reduction half-reactions. Make sure each half-reaction is balanced for number of
atoms and charge. (3 points)

b. Multiply each half-reaction by the correct number, in order to balance charges for the two half-reactions. (1
point)

c. Add the equations and simplify to get a balanced equation (1 point)

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum