You have immersed a skeletal muscle fiber and its attached motor neuron ending in a lipid-soluble compound that fluoresces in the presence of high concentrations of ca2+ ions. what region in this set of structures will fluoresce when the muscle and nerve are both unstimulated?

i think its 100.

hope this !

the answer is c.the valence of the atoms combine .

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