This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Calculate mass of carbon from CO₂. Mass of C = (12)/(44) × 3.08~g (12)/(44) = (3)/(11) (3 × 3.08)/(11) = (9.24)/(11) = 0.84~g Step 2: Calculate mass of hydrogen from H₂O. Mass of H = (2)/(18) × 0.72~g (2)/(18) = (1)/(9) (0.72)/(9) = 0.08~g Step 3: Calculate mass of hydrocarbon. Mass of hydrocarbon = 0.84~g + 0.08~g = 0.92~g Step 4: Calculate moles of C and H atoms. Moles of C = (0.84)/(12) = 0.07~mol Moles of H = (0.08)/(1) = 0.08~mol Step 5: Find simplest ratio of C:H atoms. C:H = 0.07 : 0.08 = 7 : 8 Empirical formula is C7H8. Step 6: Calculate molar mass of C7H8. M = (7 × 12) + (8 × 1) = 84 + 8 = 92~g/mol Final answer: 92 g/mol 92 g/mol