Which statement correctly describes an electrode in a voltaic cell of copper and hydrogen?

a. copper atoms become copper ions at the anode because the srp is more positive.

b. hydrogen ions become diatomic hydrogen at the cathode because hydrogen is always reduced in a voltaic cell.

c. copper ions become copper atoms at the cathode because copper is always reduced in a voltaic cell.

d. diatomic hydrogen becomes hydrogen ions at the anode because the srp is more negative.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.