A. what is the mass number of the particle emitted from the nucleus during beta minus (β–) decay? b. what kind of charge does the particle emitted from the nucleus during beta minus (β–) decay have? c. what is another name for a beta minus (β–) particle?

For a. Mass number for the particle is 0.

For b. The charge on the particle is -1.

For c. Another name for - particle is electron.

Explanation:

Beta- minus decay is the decay process in which beta-particle is emitted. The mass number of the nuclei remains same and the mass number of the particle is 0. The charge on the particle is -1 and the emitted particle is also called as electron.

For a. The mass number for the particle is 0.

For b. The charge on the particle is -1.

For c. Another name for - particle is electron.

0.51

Explanation:

Given the Nernst equation;

E= E° - 0.0592/n logQ

E= 355 mV or 0.355 V

E° = 0.34 - 0= 0.34 V

n= 2(two electrons were transferred in the process)

Equation of the reaction;

H2(g) + Cu^2+(aq) > 2H^+(aq) + Cu(s)

Substituting values;

0.355 = 0.34 - 0.0592/2 log([H^+]/1)

0.355 - 0.34 = - 0.0296 log [H^+]

0.015/-0.0296 = log [H^+]

Antilog (-0.5068) = [H^+]

[H^+] = 0.311 M

pH = -log[H^+]

pH= - log(0.311 M)

pH = 0.51