Answer: 3.46 grams of water is produced.
Step-by-step explanation:
The chemical formula for aluminum hydroxide is Al(OH)3. When it decomposes, it forms aluminum oxide (Al2O3) and water (H2O).
The balanced chemical equation for this reaction is:
2 Al(OH)3 → Al2O3 + 3 H2O
molar mass of Al(OH)3 = 78.0 g/mol
moles of Al(OH)3 = mass / molar mass = 10.0 g / 78.0 g/mol = 0.1282 mol
mole ratio from the balanced equation to calculate the number of moles of water produced:
moles of H2O = (3/2) * moles of Al(OH)3
moles of H2O = (3/2) * 0.1282 mol = 0.1923 mol
convert the moles of water to grams:
molar mass of H2O = 18.0 g/mol
mass of H2O = moles of H2O * molar mass = 0.1923 mol * 18.0 g/mol = 3.46 g