4. Potassium and iodine combine to form potassium iodide. 2K+1, 2K1
a. This synthesis reaction begins with 150 grams of iodine and 45.6 grams of potassium, performa
stoichiometric calculation to determine which reactant is the limiting reactant and which react
the excess reactant?

confused

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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