6. What kind of reaction does the conversion of A to B represent? H2SO, H20 но н A в A) Acid-base reaction. B) Elimination reaction. C) Substitution reaction. D) Addition reaction. 7. Which of the following statements about bond breaking is true? A) Homolysis and heterolysis require energy. B) In homolysis, the electrons in the bond are divided unequally. C) In heterolysis, the electrons in the bond are divided equally. D) Homolysis generates charged intermediates. 8. Which of the following statements about bond breaking is not true? A) Homolysis generates uncharged reactive intermediates with unpaired electrons. B) Homolysis require energy but heterolysis does not require energy. C) Heterolysis generates charged intermediates. D) Heterolysis involves unequal sharing of bonding electrons by atoms. 9. Which of the following statements is true? A) Ionic intermediates are formed in radical reactions. B) Radicals are intermediates in polar reactions. C) Carbocations are electrophiles. D) Radicals are nucleophiles.

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What is a primary standard?

The Ksp of Al(OH)3 is 4.6*10-33, and the Ksp of Zn(OH)2 is 3*10-17   1) Can Al3+ be separated from Zn2+ by the addition of an NaOH solution to an acidic solution that contains 0.350 M Zn2+ and 0.150 M Al3+ ? If can't leave answer fields in parts 2, 3 empty. (Answer as yes or no) 2) At what hydroxide ion concentration will the second cation precipitate? (Answer must be mol/L) 3) What is the concentration of the other cation at that hydroxide ion concentration? (Answer must be mol/L)

One of the most important applications of ion exchange is the separation of large molecules from small molecules? 1- true 2- Error

analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU) caffeine 1 1 4.67 302.85 aspartame 5 1 7.53 15.83 benzoic acid 1 1 8.14 89.98 saccharin 1 1 1.91 84.86 mixture(add everything above with 1:1:1:1 ratio)   1 4.47 69.58 How to get the concentration of the mixture in this case?