Given the reaction that occurs in an electrochemical cell:

Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s)

During this reaction, the oxidation number of Cu changes from

A) 0 to + 2

B) 0 to - 2

C) + 2 to 0

D) - 2 to 0

Which equation represents the oxidation half-reaction for this redox reaction? Mg + CuSO4 → MgSO4 + Cu A. Mg → Mg B. Mg → Mg + O4 C. Mg → Mg + 2e- D. Mg → Mg + 3e-

How are repetition and replication alike and different?

What object has the mass or weight of 0

How can a saturated solution of a solid be made unsaturated? A). by increasing the temperature of the solvent B). by decreasing the temperature of the solvent C). by stirring the solution E). by adding more solute D).

Which is one way that a short-term environmental change will most likely affect organisms within an ecosystem? O It will lead to larger populations. O It will lead to speciation. O It will lead to adaptation. O It will lead to forced migration.

What is atomic and mass number

You mix 55 ml of 1.00 m silver nitrate with 25 ml of 1.06 m sodium chloride. what mass of silver chloride should you form?

Consider the compounds 4-tert-butylcyclohexanol and 4-tert-butylcyclohexanone. using silica gel plates, which of the two compounds will have the higher rf value when ethyl acetate is the developing solvent?

Which model of election configuration is the most accurate? The quantum mechanical atomic model The Rutherford atomic model The Bohr atomic model O Plum pudding atomic model The quantum gravity atomic model

How is the rate of appearance of h2o related to the rate of disappearance of o2?