Select all of the following that are true about your Zn-Ag cell. a. Ag is gaining electrons. Zn is getting oxidized.
b. Electrons travel toward the Ag half-cell.
c. Ag is getting reduced.
d. Electrons travel away from the Zn half-cell.
e. Zn is losing electrons. Zn2 is gaining electrons.
f. Ag is getting oxidized. Electrons travel toward the Zn half-cell.
g. Electrons travel away from the Ag half-cell. Zn2 is getting reduced.
h. Ag is losing electrons. Incorrect: Your answer is incorrect.

The correct statements are :

a. Ag is gaining electrons. Zn is getting oxidized.

b.  Electrons travel toward the Ag half-cell.

c.  Ag is getting reduced.

d. Electrons travel away from the Zn half-cell.

Explanation:

Galvanic cell is a device which is used for the conversion of the chemical energy produces in a redox reaction into the electrical energy.

The standard reduction potential for zinc (Zn) and silver (Ag) are as follows:

Reduction takes place easily if the standard reduction potential is higher (positive) and oxidation takes place easily if the standard reduction potential is less (more negative).

Here Zn undergoes oxidation by loss of electrons, thus act as anode. Silver undergoes reduction by gain of electrons and thus act as cathode. Thus the electrons will travel from Zn half cell to Ag half cell.

Anode :

Cathode:

The correct statements are :

a. Ag is gaining electrons. Zn is getting oxidized.

b.  Electrons travel toward the Ag half-cell.

c.  Ag is getting reduced.

d. Electrons travel away from the Zn half-cell.

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.