Page 11 28. 1·06 × 10−2 moles of phenylamine, C6H5NH2, react with 5·16 g of bromine. Which equation shows the correct stoichiometry for this reaction? A C6H5NH2 + Br2 ↓ C6H4BrNH2 + HBr B C6H5NH2 + 2Br2 ↓ C6H3Br2NH2 + 2HBr C C6H5NH2 + 3Br2 ↓ C6H2Br3NH2 + 3HBr D C6H5NH2 + 4Br2 ↓ C6HBr4NH2 + 4HBr 29. Ibuprofen is used for the relief of pain, fever and inflammation. A structural formula for ibuprofen is shown below. H3C CH C OH O CH2 CH H3C CH3 If one tablet contains 300 mg of ibuprofen, approximately how many tablets can be manufactured from 1 mole of ibuprofen? A 6·73 × 102 B 6·87 × 102 C 6·73 × 10−1 D 6·87 × 10−1 [Turn over for next question