A voltaic cell is constructed with two Zn2+−Znelectrodes. The two cell compartments have [Zn2+]=1.4 M and [Zn2+]= 2.00×10−2 M , respectively. b)What is the standard emf of the cell?

c)What is the cell emf for the concentrations given?

d)For the anode compartment, predict whether [Zn2+] will increase, decrease, or stay the same as the cell operates?

e)For the cathode compartment, predict whether [Zn2+] will increase, decrease, or stay the same as the cell operates?

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally