Which of the following is a valid mole ratio from the balanced equation 2Fe2O3 + 3C - 4Fe + 3C02? 4 mol C/3 mol Fe
2 mol Fe2 O3/4 mol CO2
3 mol C/4 mol CO2
4 mol Fe/3 mol CO2​

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