In reaction #4 which element was reduced?

• Mn

• Fe

• O

• H

In reaction #4 how many electrons did Fe lose?

• 3 electrons

• 2 electrons

• 1 electron

• gained 3 electrons

In reaction #1 in the balanced equation (final) how many tin (Sn) atoms are in both sides of the reaction?

• 3 atoms

• 1 atom

• 2 atoms

• 14

In reaction #1 in the balanced equation (final) how many Hydrogen atoms are on both sides of the reaction?

• 14 atoms

• 7 atoms

• 3 atoms

• 2 atoms

In reaction #1, which element was oxidized?

• Sn

• Cr

• H

• O

In reaction #2 which is the oxidation number of Nitrogen in NO₃^-?

• +5

• -3

• +1

• +4

In reaction #2 what is the coefficient in the balanced equation (final) of Zn in the reactants part?

• 16

• 8

• 10

• 3

In reaction #2 which is the coefficient in the balanced equation (final) of H⁺?

• 10

• 16

• 3

• 8

In reaction #3 which is the oxidation number of Sulfur in SO₄^2-?

• +6

• +4

• +2

• 0

In reaction #3, which is the coefficient of H₂O in the final balanced reaction?

• 2

• 1

• 4

• -2