A reaction has the stoichiometry: 3A + B C+ D. The following data were obtained for the initial rate of formation of C at various concentrations of A and B. Initial Concentration Initial Rate of Formation of C (mol L-1 s-1) [A] [B] 0.10 0.10 0.044 0.20 0.20 0.18 0.20 0.10 0.044 (a) What is the rate law for the reaction? Rate = k [A]°[B]2 O Rate = k[A]²[B]² Rate k [A]'[B]1 O None of these. O Rate = k [A]2[B]° こ

Answer both questions

Consider each chemical equation and select all that represent a chemical reaction.     2NaI(aq)  +  Pb(NO3)2(aq)  →  2NaNO3(aq)  +  PbI2(s)     2KBr(aq) + MgCl2(aq) → 2KCl(aq) + MgBr2(aq)     HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

Consider the reaction below and answer the question below the reaction. A student performed a synthesis of ethyl 4-aminobenzoate (C) as shown in the reaction above. The student added 1.20 g of 4-aminobenzoic acid and 12.0 mL of ethanol together in the presence of sulfuric acid. The reaction mixture was heated to reflux for a period of 45 minutes. H₂N OH 4-aminobenzoic acid MM 137.14 g/m ol A 77.7% 56.1 % 128 % 72.2 % + CH3CH₂OH ethanol MM 46.10 g/mol H+ H₂N OCH₂CH3 + H₂O ethyl 4-aminobenzoate MM 165.19 g/mol C B Let's assume the theoretical yield of the reaction is 7.22 g and the student produced 5.61 g of ethyl 4-aminobenzoate. What is the percent yield of the reaction?