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
The mass of water produced is 35.7 g. Steps: 1. Calculate the molar mass of H₂: Molar mass of H₂ = 2 * 1.008 g/mol = 2.016 g/mol 2. Convert the mass of H₂ to moles: Moles of H₂ = Mass / Molar mass = 4.0 g / 2.016 g/mol = 1.9841 mol H₂ 3. Use the stoichiometry from the balanced equation (2H₂ + O₂ → 2H₂O) to find moles of H₂O: From the equation, 2 moles of H₂ produce 2 moles of H₂O. Therefore, Moles of H₂O = Moles of H₂ = 1.9841 mol H₂O 4. Calculate the molar mass of H₂O: Molar mass of H₂O = (2 1.008 g/mol) + (1 15.999 g/mol) = 18.015 g/mol 5. Convert moles of H₂O to mass: Mass of H₂O = Moles Molar mass = 1.9841 mol 18.015 g/mol = 35.744 g 6. Round to appropriate significant figures: The given mass (4.0 g) has two significant figures. Mass of H₂O = 35.7 g