The reaction of toluene, C7H8, with potassium permanganate, KMnO4, gives a 70% yield. C7H8(I) + 2KMnO4 (aq) -> KC7 H5O2 (aq) +2MnO2(s) +KOH(aq) +H2O(I)

A) if 8.60g of C7H8 is reacted with excess KMnO4 what is the theoretical yield in grams of KC7H5O2?

B) what mass of KC7H5O2 can be expected?

the correct answer is answer a. a mixture

no other options make sense

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  - sprinkles

the answer is minerals.

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