How can a redox reaction be used as a source of electrical energy?
a. two half-reactions must involve more than one electron.
b. two half-reactions must be physically separated.
c. one half-reaction must involve two metals.
d. one half-reaction must use a metal wire electrode.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

What is the empirical formula for c4h8o2

Which formula can be used to calculate the molar mass of hydrogen peroxide