<span>Kr has 8 valence electrons plus 1 for each Kr-F single bond. Total = 10 elcetrons
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-OH is elctron donating -C=-N is electron withdrawing -O-CO-CH3 is electron withdrawing -N(CH3)2 is electron donating -C(CH3)3 is electron donating -CO-O-CH3 is electron withdrawing -CH(CH3)2 is electron donating -NO2 is electrong withdrawing -CH2
A is correct because the fruit salad can be easily separated and the puch cannot so it is a solution and the fruit salad is a mixture.
4= lemon juice contains CITRIC ACID and represents a pH of 2.3
